diff --git a/independent-projects/bootstrap/core/src/main/java/io/quarkus/bootstrap/classloading/QuarkusClassLoader.java b/independent-projects/bootstrap/core/src/main/java/io/quarkus/bootstrap/classloading/QuarkusClassLoader.java
index 2434a66e39ad0..6a524115e3eda 100644
--- a/independent-projects/bootstrap/core/src/main/java/io/quarkus/bootstrap/classloading/QuarkusClassLoader.java
+++ b/independent-projects/bootstrap/core/src/main/java/io/quarkus/bootstrap/classloading/QuarkusClassLoader.java
@@ -527,11 +527,11 @@ public Class<?> loadClass(String name) throws ClassNotFoundException {
     protected Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {
         ensureOpen(name);
 
-        if (name.contains("acme") || name.contains("Handler")) {
+        if (name.contains("acme") || name.contains("io.vertx.core.Handler")) {
             System.out.println("HOLLY loading " + name + " with " + this);
         }
 
-        if (name.contains("Handler")) {
+        if (name.contains("io.vertx.core.Handler")) {
             new Exception("diagnostic").printStackTrace();
         }