diff --git a/src/main/java/fr/adrienbrault/idea/symfony2plugin/config/xml/XmlHelper.java b/src/main/java/fr/adrienbrault/idea/symfony2plugin/config/xml/XmlHelper.java
index ed4edb33b..80fc713a1 100644
--- a/src/main/java/fr/adrienbrault/idea/symfony2plugin/config/xml/XmlHelper.java
+++ b/src/main/java/fr/adrienbrault/idea/symfony2plugin/config/xml/XmlHelper.java
@@ -15,6 +15,7 @@
 import com.jetbrains.php.lang.psi.elements.Parameter;
 import com.jetbrains.php.lang.psi.elements.PhpClass;
 import fr.adrienbrault.idea.symfony2plugin.dic.ParameterResolverConsumer;
+import fr.adrienbrault.idea.symfony2plugin.dic.container.util.ServiceContainerUtil;
 import fr.adrienbrault.idea.symfony2plugin.util.PhpElementsUtil;
 import fr.adrienbrault.idea.symfony2plugin.util.dict.ServiceUtil;
 import fr.adrienbrault.idea.symfony2plugin.util.yaml.YamlHelper;
@@ -23,8 +24,7 @@
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
-import java.util.HashMap;
-import java.util.Map;
+import java.util.*;
 
 /**
  * @author Daniel Espendiller <daniel@espendiller.net>
@@ -834,4 +834,42 @@ public static boolean isXmlFileExtension(@NotNull PsiFile psiFile) {
         VirtualFile virtualFile = psiFile.getVirtualFile();
         return virtualFile == null || !"xml".equalsIgnoreCase(virtualFile.getExtension());
     }
+
+    /**
+     * <prototype exclude="../src/{DependencyInjection,Entity,Tests,Kernel.php}">"
+     *  <exclude>../foobar</exclude>"
+     * </prototype>"
+     */
+    public static @NotNull Collection<PhpClass> getNamespaceResourcesClasses(@NotNull XmlTag xmlTag) {
+        String namespace = xmlTag.getAttributeValue("namespace");
+        if (StringUtils.isBlank(namespace)) {
+            return Collections.emptyList();
+        }
+
+        String resource = xmlTag.getAttributeValue("resource");
+        if (StringUtils.isBlank(resource)) {
+            return Collections.emptyList();
+        }
+
+        Set<String> excludes = new HashSet<>();
+        String exclude = xmlTag.getAttributeValue("exclude");
+        if (StringUtils.isNotBlank(exclude)) {
+            excludes.add(exclude);
+        }
+
+        for (XmlTag excludeTag : xmlTag.findSubTags("exclude")) {
+            String text = excludeTag.getValue().getText();
+            if (StringUtils.isNotBlank(text)) {
+                excludes.add(text);
+            }
+        }
+
+        return ServiceContainerUtil.getPhpClassFromResources(
+            xmlTag.getProject(),
+            namespace,
+            xmlTag.getContainingFile().getVirtualFile(),
+            List.of(resource),
+            excludes
+        );
+    }
 }
diff --git a/src/main/java/fr/adrienbrault/idea/symfony2plugin/dic/attribute/value/XmlTagAttributeValue.java b/src/main/java/fr/adrienbrault/idea/symfony2plugin/dic/attribute/value/XmlTagAttributeValue.java
index 785ba9451..bc095a52f 100644
--- a/src/main/java/fr/adrienbrault/idea/symfony2plugin/dic/attribute/value/XmlTagAttributeValue.java
+++ b/src/main/java/fr/adrienbrault/idea/symfony2plugin/dic/attribute/value/XmlTagAttributeValue.java
@@ -5,9 +5,7 @@
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
-import java.util.Arrays;
-import java.util.Collection;
-import java.util.Collections;
+import java.util.*;
 import java.util.stream.Collectors;
 
 /**
@@ -25,11 +23,26 @@ public XmlTagAttributeValue(@NotNull XmlTag xmlTag) {
     @NotNull
     @Override
     public Collection<String> getStringArray(@NotNull String key) {
+        Set<String> values = new HashSet<>();
+
         String string = getString(key);
+        if (StringUtils.isNotBlank(string)) {
+            values.add(string);
+        }
+
+        // <prototype exclude="../src/{DependencyInjection,Entity,Tests,Kernel.php}">"
+        //  <exclude>../foobar</exclude>"
+        // </prototype>"
+        if (key.equals("exclude")) {
+            for (XmlTag excludeTag : xmlTag.findSubTags(key)) {
+                String text = excludeTag.getValue().getText();
+                if (StringUtils.isNotBlank(text)) {
+                    values.add(text);
+                }
+            }
+        }
 
-        return string != null
-            ? Collections.singleton(string)
-            : Collections.emptyList();
+        return values;
     }
 
     @Nullable
diff --git a/src/main/java/fr/adrienbrault/idea/symfony2plugin/dic/linemarker/XmlLineMarkerProvider.java b/src/main/java/fr/adrienbrault/idea/symfony2plugin/dic/linemarker/XmlLineMarkerProvider.java
index fc283447d..9572d8076 100644
--- a/src/main/java/fr/adrienbrault/idea/symfony2plugin/dic/linemarker/XmlLineMarkerProvider.java
+++ b/src/main/java/fr/adrienbrault/idea/symfony2plugin/dic/linemarker/XmlLineMarkerProvider.java
@@ -3,6 +3,8 @@
 import com.intellij.codeInsight.daemon.LineMarkerInfo;
 import com.intellij.codeInsight.daemon.LineMarkerProvider;
 import com.intellij.codeInsight.navigation.NavigationGutterIconBuilder;
+import com.intellij.icons.AllIcons;
+import com.intellij.openapi.util.NotNullLazyValue;
 import com.intellij.patterns.XmlPatterns;
 import com.intellij.patterns.XmlTagPattern;
 import com.intellij.psi.PsiElement;
@@ -46,17 +48,42 @@ public void collectSlowLineMarkers(@NotNull List<? extends PsiElement> psiElemen
                 continue;
             }
 
+            if(!XmlHelper.getXmlTagNameLeafStartPattern().accepts(psiElement)) {
+                continue;
+            }
+
             PsiElement xmlTag = psiElement.getParent();
-            if(!(xmlTag instanceof XmlTag) || !getServiceIdPattern().accepts(xmlTag)) {
+            if(!(xmlTag instanceof XmlTag)) {
                 continue;
             }
 
-            if(lazyDecoratedParentServiceValues == null) {
-                lazyDecoratedParentServiceValues = new LazyDecoratedParentServiceValues(psiElement.getProject());
+            if (getServiceIdPattern().accepts(xmlTag)) {
+                if(lazyDecoratedParentServiceValues == null) {
+                    lazyDecoratedParentServiceValues = new LazyDecoratedParentServiceValues(psiElement.getProject());
+                }
+
+                // <services><service id="foo"/></services>
+                visitServiceId(psiElement, (XmlTag) xmlTag, result, lazyDecoratedParentServiceValues);
+
+                continue;
             }
 
-            // <services><service id="foo"/></services>
-            visitServiceId(psiElement, (XmlTag) xmlTag, result, lazyDecoratedParentServiceValues);
+            if (getPrototypeNamespacePattern().accepts(xmlTag)) {
+                String namespace = ((XmlTag) xmlTag).getAttributeValue("namespace");
+                if (StringUtils.isBlank(namespace)) {
+                    continue;
+                }
+
+                String resource = ((XmlTag) xmlTag).getAttributeValue("resource");
+                if (StringUtils.isBlank(resource)) {
+                    continue;
+                }
+
+                result.add(NavigationGutterIconBuilder.create(AllIcons.Modules.SourceRoot)
+                    .setTargets(NotNullLazyValue.lazy(() -> XmlHelper.getNamespaceResourcesClasses((XmlTag) xmlTag)))
+                    .setTooltipText("Navigate to class")
+                    .createLineMarkerInfo(psiElement));
+            }
         }
     }
 
@@ -115,4 +142,14 @@ private static XmlTagPattern.Capture getServiceIdPattern() {
                 XmlHelper.getInsideTagPattern("services")
             ).inFile(XmlHelper.getXmlFilePattern());
     }
+
+    /**
+     * <prototype namespace="App\" resource="../src/*" exclude="../src/{DependencyInjection,Entity,Tests,Kernel.php}"/>
+     */
+    private static XmlTagPattern.Capture getPrototypeNamespacePattern() {
+        return XmlPatterns.xmlTag().withName("prototype")
+            .withChild(XmlPatterns.xmlAttribute().withName("namespace")).inside(
+                XmlHelper.getInsideTagPattern("services")
+            ).inFile(XmlHelper.getXmlFilePattern());
+    }
 }
diff --git a/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/config/xml/XmlHelperTest.java b/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/config/xml/XmlHelperTest.java
index f289def33..edf13b092 100644
--- a/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/config/xml/XmlHelperTest.java
+++ b/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/config/xml/XmlHelperTest.java
@@ -1,16 +1,24 @@
 package fr.adrienbrault.idea.symfony2plugin.tests.config.xml;
 
 import com.intellij.ide.highlighter.XmlFileType;
+import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.psi.PsiElement;
+import com.intellij.psi.PsiFile;
+import com.intellij.psi.PsiManager;
+import com.intellij.psi.util.PsiTreeUtil;
 import com.intellij.psi.xml.XmlAttributeValue;
 import com.intellij.psi.xml.XmlTag;
 import com.intellij.util.containers.ContainerUtil;
 import com.jetbrains.php.lang.psi.elements.Parameter;
+import com.jetbrains.php.lang.psi.elements.PhpClass;
+import com.jetbrains.php.lang.psi.elements.PhpNamedElement;
 import fr.adrienbrault.idea.symfony2plugin.config.xml.XmlHelper;
 import fr.adrienbrault.idea.symfony2plugin.tests.SymfonyLightCodeInsightFixtureTestCase;
 
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
 
 /**
  * @author Daniel Espendiller <daniel@espendiller.net>
@@ -169,4 +177,23 @@ public void testGetArgumentIndexOnArgumentCount() {
         PsiElement psiElement = myFixture.getFile().findElementAt(myFixture.getCaretOffset());
         assertEquals(1, XmlHelper.getArgumentIndex((XmlTag) psiElement.getParent()));
     }
+
+    /**
+     * @see XmlHelper#getNamespaceResourcesClasses
+     */
+    public void testGetNamespaceResourcesClasses() {
+        myFixture.copyFileToProject("XmlHelper.php", "src/XmlHelper.php");
+        VirtualFile service = myFixture.copyFileToProject("services.xml", "src/services.xml");
+
+        PsiFile file = PsiManager.getInstance(getProject()).findFile(service);
+
+        Collection<XmlTag> xmlTags = PsiTreeUtil.collectElementsOfType(file, XmlTag.class);
+
+        XmlTag xmlTag = xmlTags.stream().filter(xmlTag1 -> "prototype".equals(xmlTag1.getName())).findFirst().orElseThrow();
+        Collection<String> namespaceResourcesClasses = XmlHelper.getNamespaceResourcesClasses(xmlTag).stream()
+            .map(PhpNamedElement::getFQN)
+            .collect(Collectors.toSet());
+
+        assertContainsElements(namespaceResourcesClasses, "\\Foo\\Bar");
+    }
 }
diff --git a/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/config/xml/fixtures/services.xml b/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/config/xml/fixtures/services.xml
index 37d06a52f..d8b24284b 100644
--- a/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/config/xml/fixtures/services.xml
+++ b/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/config/xml/fixtures/services.xml
@@ -2,5 +2,6 @@
 <container>
     <services>
         <service id="foo.bar_factory" class="Foo\Bar"/>
+        <prototype namespace="Foo\" resource="../src/*"/>
     </services>
 </container>
\ No newline at end of file
diff --git a/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/stubs/indexes/ServicesDefinitionStubIndexTest.java b/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/stubs/indexes/ServicesDefinitionStubIndexTest.java
index 7e100a35d..9bddda1e6 100644
--- a/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/stubs/indexes/ServicesDefinitionStubIndexTest.java
+++ b/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/stubs/indexes/ServicesDefinitionStubIndexTest.java
@@ -95,6 +95,7 @@ public void testThatResourceAndExcludeAttributesAreExtractedForXml() {
         assertEquals("App\\Xml\\", firstValue.getId());
         assertContainsElements(firstValue.getResource(), "../src/*");
         assertContainsElements(firstValue.getExclude(), "../src/{DependencyInjection,Entity,Migrations,Tests,Kernel.php}");
+        assertContainsElements(firstValue.getExclude(), "../src/foobar");
     }
 
     public void testThatTagAreInIndexForYaml() {
diff --git a/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/stubs/indexes/fixtures/services.xml b/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/stubs/indexes/fixtures/services.xml
index f26a32bac..58177bc74 100644
--- a/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/stubs/indexes/fixtures/services.xml
+++ b/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/stubs/indexes/fixtures/services.xml
@@ -35,7 +35,9 @@
 
         <prototype namespace="App\Xml\"
                    resource="../src/*"
-                   exclude="../src/{DependencyInjection,Entity,Migrations,Tests,Kernel.php}"/>
+                   exclude="../src/{DependencyInjection,Entity,Migrations,Tests,Kernel.php}">
+            <exclude>../src/foobar</exclude>
+        </prototype>
 
         <service id="foo.tagged.xml_type" class="AppBundle\Controller\DefaultController">
             <tag name="xml_type_tag"/>