diff --git a/src/main/java/org/apache/log4j/MDC.java b/src/main/java/org/apache/log4j/MDC.java
old mode 100644
new mode 100755
index afe90358..cc3f0177
--- a/src/main/java/org/apache/log4j/MDC.java
+++ b/src/main/java/org/apache/log4j/MDC.java
@@ -49,7 +49,7 @@ public class MDC {
 
     // boolean java1;
 
-    ThreadLocalMap tlm;
+    Object tlm;
 
     private MDC() {
 	tlm = new ThreadLocalMap();
@@ -170,7 +170,7 @@ private void clear0() {
 		ht.clear();
 	    }
 
-	    tlm.remove();
+        (ThreadLocalMap) tlm).remove();
 	}
     }