diff --git a/src/main/java/com/ginsberg/junit/exit/agent/Junit5SystemExitAgent.java b/src/main/java/com/ginsberg/junit/exit/agent/Junit5SystemExitAgent.java
index 32bd0b1..ea45078 100644
--- a/src/main/java/com/ginsberg/junit/exit/agent/Junit5SystemExitAgent.java
+++ b/src/main/java/com/ginsberg/junit/exit/agent/Junit5SystemExitAgent.java
@@ -45,7 +45,7 @@ private Junit5SystemExitAgent() {
     }
 
     private final static Set<String> disallowedClassPrefixes = Set.of(
-            "com/sun", "java/", "jdk/", "worker/org/gradle", "sun/"
+            "com/sun/", "java/", "jdk/", "worker/org/gradle/", "sun/"
     );
 
     private final static String SKIP_ANNOTATION = "/DoNotRewriteExitCalls;";