diff --git a/apm-agent-core/src/main/java/co/elastic/apm/agent/bci/classloading/IndyPluginClassLoader.java b/apm-agent-core/src/main/java/co/elastic/apm/agent/bci/classloading/IndyPluginClassLoader.java
index 271bb3d07c..27494243ea 100644
--- a/apm-agent-core/src/main/java/co/elastic/apm/agent/bci/classloading/IndyPluginClassLoader.java
+++ b/apm-agent-core/src/main/java/co/elastic/apm/agent/bci/classloading/IndyPluginClassLoader.java
@@ -68,7 +68,7 @@ agentClassLoader, startsWith("co.elastic.apm.agent").or(startsWith("net.bytebudd
             // The list of packages not to load should correspond with matching dependency exclusions from the apm-agent-core in apm-agent-plugins/pom.xml
             // As we're using a custom logging facade, plugins don't need to refer to the agent-bundled log4j2 or slf4j.
             return new DiscriminatingMultiParentClassLoader(
-                agentClassLoader, not(startsWith("org.apache.logging.log4j").and(not(startsWith("org.slf4j")))),
+                agentClassLoader, not(startsWith("org.apache.logging.log4j")).and(not(startsWith("org.slf4j"))).and(not(startsWith("co.elastic.logging.log4j2"))),
                 targetClassLoader, ElementMatchers.<String>any());
         }
     }
diff --git a/apm-agent-plugins/apm-ecs-logging-plugin/src/main/java/co/elastic/apm/agent/ecs_logging/Log4j2ServiceNameInstrumentation.java b/apm-agent-plugins/apm-ecs-logging-plugin/src/main/java/co/elastic/apm/agent/ecs_logging/Log4j2ServiceNameInstrumentation.java
index eef1f2e3b4..ac11702d62 100644
--- a/apm-agent-plugins/apm-ecs-logging-plugin/src/main/java/co/elastic/apm/agent/ecs_logging/Log4j2ServiceNameInstrumentation.java
+++ b/apm-agent-plugins/apm-ecs-logging-plugin/src/main/java/co/elastic/apm/agent/ecs_logging/Log4j2ServiceNameInstrumentation.java
@@ -19,6 +19,7 @@
 package co.elastic.apm.agent.ecs_logging;
 
 import co.elastic.apm.agent.bci.TracerAwareInstrumentation;
+import co.elastic.apm.agent.bci.bytebuddy.CustomElementMatchers;
 import co.elastic.apm.agent.configuration.CoreConfiguration;
 import co.elastic.apm.agent.configuration.ServiceInfo;
 import co.elastic.apm.agent.impl.ElasticApmTracer;
@@ -33,9 +34,15 @@
 import java.util.Collection;
 
 import static net.bytebuddy.matcher.ElementMatchers.named;
+import static net.bytebuddy.matcher.ElementMatchers.not;
 
 public class Log4j2ServiceNameInstrumentation extends TracerAwareInstrumentation {
 
+    @Override
+    public ElementMatcher.Junction<ClassLoader> getClassLoaderMatcher() {
+        return not(CustomElementMatchers.isAgentClassLoader());
+    }
+
     @Override
     public ElementMatcher<? super TypeDescription> getTypeMatcher() {
         return named("co.elastic.logging.log4j2.EcsLayout$Builder");