diff --git a/dd-java-agent/agent-tooling/src/main/resources/datadog/trace/agent/tooling/bytebuddy/matcher/ignored_class_name.trie b/dd-java-agent/agent-tooling/src/main/resources/datadog/trace/agent/tooling/bytebuddy/matcher/ignored_class_name.trie
index 36cedaf6081..e86702c934c 100644
--- a/dd-java-agent/agent-tooling/src/main/resources/datadog/trace/agent/tooling/bytebuddy/matcher/ignored_class_name.trie
+++ b/dd-java-agent/agent-tooling/src/main/resources/datadog/trace/agent/tooling/bytebuddy/matcher/ignored_class_name.trie
@@ -66,6 +66,7 @@
 0 java.nio.ByteBuffer
 0 java.rmi.*
 0 java.util.Timer
+0 java.util.TimerTask
 0 java.util.concurrent.*
 1 java.util.concurrent.ConcurrentHashMap*
 1 java.util.concurrent.atomic.*
diff --git a/dd-java-agent/instrumentation/java/java-concurrent/java-concurrent-1.8/src/main/java/datadog/trace/instrumentation/java/concurrent/timer/TimerTaskInstrumentation.java b/dd-java-agent/instrumentation/java/java-concurrent/java-concurrent-1.8/src/main/java/datadog/trace/instrumentation/java/concurrent/timer/TimerTaskInstrumentation.java
index 496b6d20dc8..9272ff57353 100644
--- a/dd-java-agent/instrumentation/java/java-concurrent/java-concurrent-1.8/src/main/java/datadog/trace/instrumentation/java/concurrent/timer/TimerTaskInstrumentation.java
+++ b/dd-java-agent/instrumentation/java/java-concurrent/java-concurrent-1.8/src/main/java/datadog/trace/instrumentation/java/concurrent/timer/TimerTaskInstrumentation.java
@@ -33,7 +33,7 @@ public String hierarchyMarkerType() {
 
   @Override
   public ElementMatcher<TypeDescription> hierarchyMatcher() {
-    return extendsClass(named(TimerTask.class.getName()));
+    return extendsClass(named("java.util.TimerTask"));
   }
 
   @Override