diff --git a/commons/src/main/java/com/navercorp/pinpoint/common/util/Predicates.java b/commons/src/main/java/com/navercorp/pinpoint/common/util/Predicates.java
index 408952428fc5..6ed77e6dddab 100644
--- a/commons/src/main/java/com/navercorp/pinpoint/common/util/Predicates.java
+++ b/commons/src/main/java/com/navercorp/pinpoint/common/util/Predicates.java
@@ -8,7 +8,13 @@ private Predicates() {
     }
 
     @SuppressWarnings("rawtypes")
-    private static final Predicate IS_TRUE = new Predicate() {
+    private static final Predicate IS_TRUE = new TruePredicate();
+
+    @SuppressWarnings("rawtypes")
+    private static final Predicate IS_FALSE = new FalsePredicate();
+
+    @SuppressWarnings("rawtypes")
+    private static class TruePredicate implements Predicate {
         @Override
         public boolean test(Object o) {
             return true;
@@ -16,12 +22,12 @@ public boolean test(Object o) {
 
         @Override
         public String toString() {
-            return "Predicates.isTrue()";
+            return "TruePredicate";
         }
     };
 
     @SuppressWarnings("rawtypes")
-    private static final Predicate IS_FALSE = new Predicate() {
+    private static class FalsePredicate implements Predicate {
         @Override
         public boolean test(Object o) {
             return false;
@@ -29,13 +35,13 @@ public boolean test(Object o) {
 
         @Override
         public String toString() {
-            return "Predicates.isFalse()";
+            return "FalsePredicate";
         }
-    };
+    }
 
     @SuppressWarnings("unchecked")
     public static <T> Predicate<T> isTrue() {
-        return (Predicate<T>) IS_TRUE;
+        return IS_TRUE;
     }
 
     @SuppressWarnings("unchecked")