diff --git a/src/org/apache/xalan/extensions/ExtensionNamespacesManager.java b/src/org/apache/xalan/extensions/ExtensionNamespacesManager.java
index a4e9acc1e..d2e877f4c 100644
--- a/src/org/apache/xalan/extensions/ExtensionNamespacesManager.java
+++ b/src/org/apache/xalan/extensions/ExtensionNamespacesManager.java
@@ -168,7 +168,7 @@ public ExtensionNamespaceSupport defineJavaNamespace(String ns, String classOrPa
     if (className.startsWith("class:"))
       className = className.substring(6);
 
-    int lastSlash = className.lastIndexOf("/");
+    int lastSlash = className.lastIndexOf('/');
     if (-1 != lastSlash)
       className = className.substring(lastSlash + 1);