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 e4d471ff0..aa0f3e47f 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
@@ -1,5 +1,7 @@
 package fr.adrienbrault.idea.symfony2plugin.config.xml;
 
+import com.intellij.ide.highlighter.XmlFileType;
+import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.patterns.*;
 import com.intellij.psi.PsiElement;
 import com.intellij.psi.PsiFile;
@@ -797,4 +799,25 @@ public static PsiElementPattern.Capture<PsiElement> getXmlTagNameLeafStartPatter
             .afterLeaf(PlatformPatterns.psiElement(XmlTokenType.XML_START_TAG_START))
             .withParent(XmlTag.class);
     }
+
+    public static boolean isXmlFileExtension(@NotNull PsiFile psiFile) {
+        if (psiFile.getFileType() != XmlFileType.INSTANCE) {
+            return false;
+        }
+
+        String filename = psiFile.getName();
+
+        int i = filename.lastIndexOf('.');
+        String extension = null;
+        if (i > 0) {
+            extension = filename.substring(i + 1).toLowerCase();
+        }
+
+        if ("xml".equalsIgnoreCase(extension)) {
+            return true;
+        }
+
+        VirtualFile virtualFile = psiFile.getVirtualFile();
+        return virtualFile == null || !"xml".equalsIgnoreCase(virtualFile.getExtension());
+    }
 }
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 81ba370ee..fc283447d 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
@@ -6,6 +6,7 @@
 import com.intellij.patterns.XmlPatterns;
 import com.intellij.patterns.XmlTagPattern;
 import com.intellij.psi.PsiElement;
+import com.intellij.psi.PsiFile;
 import com.intellij.psi.xml.XmlTag;
 import fr.adrienbrault.idea.symfony2plugin.Symfony2ProjectComponent;
 import fr.adrienbrault.idea.symfony2plugin.config.xml.XmlHelper;
@@ -33,6 +34,11 @@ public void collectSlowLineMarkers(@NotNull List<? extends PsiElement> psiElemen
             return;
         }
 
+        PsiFile containingFile = psiElements.get(0).getContainingFile();
+        if (containingFile == null || !XmlHelper.isXmlFileExtension(containingFile)) {
+            return;
+        }
+
         LazyDecoratedParentServiceValues lazyDecoratedParentServiceValues = null;
 
         for (PsiElement psiElement : psiElements) {
diff --git a/src/main/java/fr/adrienbrault/idea/symfony2plugin/doctrine/metadata/DoctrineMetadataLineMarkerProvider.java b/src/main/java/fr/adrienbrault/idea/symfony2plugin/doctrine/metadata/DoctrineMetadataLineMarkerProvider.java
index 1b8ee8a48..9329965dd 100644
--- a/src/main/java/fr/adrienbrault/idea/symfony2plugin/doctrine/metadata/DoctrineMetadataLineMarkerProvider.java
+++ b/src/main/java/fr/adrienbrault/idea/symfony2plugin/doctrine/metadata/DoctrineMetadataLineMarkerProvider.java
@@ -5,11 +5,13 @@
 import com.intellij.codeInsight.navigation.NavigationGutterIconBuilder;
 import com.intellij.openapi.project.Project;
 import com.intellij.psi.PsiElement;
+import com.intellij.psi.PsiFile;
 import com.intellij.psi.xml.XmlAttributeValue;
 import com.intellij.psi.xml.XmlTokenType;
 import com.jetbrains.php.lang.psi.elements.PhpClass;
 import fr.adrienbrault.idea.symfony2plugin.Symfony2Icons;
 import fr.adrienbrault.idea.symfony2plugin.Symfony2ProjectComponent;
+import fr.adrienbrault.idea.symfony2plugin.config.xml.XmlHelper;
 import fr.adrienbrault.idea.symfony2plugin.doctrine.metadata.util.DoctrineMetadataUtil;
 import org.apache.commons.lang.StringUtils;
 import org.jetbrains.annotations.NotNull;
@@ -41,6 +43,11 @@ public void collectSlowLineMarkers(@NotNull List<? extends PsiElement> psiElemen
             return;
         }
 
+        PsiFile containingFile = psiElements.get(0).getContainingFile();
+        if (containingFile == null || !XmlHelper.isXmlFileExtension(containingFile)) {
+            return;
+        }
+
         for(PsiElement psiElement: psiElements) {
             if(psiElement.getNode().getElementType() != XmlTokenType.XML_ATTRIBUTE_VALUE_TOKEN) {
                 continue;
diff --git a/src/main/java/fr/adrienbrault/idea/symfony2plugin/routing/XmlLineMarkerProvider.java b/src/main/java/fr/adrienbrault/idea/symfony2plugin/routing/XmlLineMarkerProvider.java
index ef2458aca..53d1f5a3d 100644
--- a/src/main/java/fr/adrienbrault/idea/symfony2plugin/routing/XmlLineMarkerProvider.java
+++ b/src/main/java/fr/adrienbrault/idea/symfony2plugin/routing/XmlLineMarkerProvider.java
@@ -31,6 +31,11 @@ public void collectSlowLineMarkers(@NotNull List<? extends PsiElement> psiElemen
             return;
         }
 
+        PsiFile containingFile = psiElements.get(0).getContainingFile();
+        if (containingFile == null || !XmlHelper.isXmlFileExtension(containingFile)) {
+            return;
+        }
+
         for(PsiElement psiElement: psiElements) {
             if(XmlHelper.getXmlTagNameLeafStartPattern().accepts(psiElement)) {
                 attachRouteActions(psiElement, lineMarkerInfos);