diff --git a/profiler-optional/src/test/java/com/navercorp/pinpoint/profiler/plugin/Java7PluginClassLoaderTest.java b/profiler-optional/src/test/java/com/navercorp/pinpoint/profiler/plugin/Java7PluginClassLoaderTest.java
index 7cf11b059..4a91e6d55 100644
--- a/profiler-optional/src/test/java/com/navercorp/pinpoint/profiler/plugin/Java7PluginClassLoaderTest.java
+++ b/profiler-optional/src/test/java/com/navercorp/pinpoint/profiler/plugin/Java7PluginClassLoaderTest.java
@@ -67,7 +67,6 @@ public class Java7PluginClassLoaderTest {
         @Override
         public void run() {
             for (int i = 0; i < count; i++) {
-                System.out.println(this + ": " + i);
                 synchronized(parent) {
                     try {
                         child.loadClass("no.such.Class");
@@ -91,7 +90,6 @@ public class Java7PluginClassLoaderTest {
         @Override
         public void run() {
             for (int i = 0; i < count; i++) {
-                System.out.println(this + ": " + i);
                 synchronized(child) {
                     try {
                         child.loadClass("no.such.Class");