diff --git a/src/main/org/apache/tools/ant/AntTypeDefinition.java b/src/main/org/apache/tools/ant/AntTypeDefinition.java
index 60953d7dc..60ba9d44e 100644
--- a/src/main/org/apache/tools/ant/AntTypeDefinition.java
+++ b/src/main/org/apache/tools/ant/AntTypeDefinition.java
@@ -352,6 +352,9 @@ public class AntTypeDefinition {
         // is the same
         ClassLoader oldLoader = other.getClassLoader();
         ClassLoader newLoader = this.getClassLoader();
+        if (oldLoader == newLoader) {
+            return true;
+        }
         return
             newLoader != null
             && oldLoader != null