diff --git a/src/main/java/org/apache/log4j/MDC.java b/src/main/java/org/apache/log4j/MDC.java
index 5805772..fdcfeed 100755
--- a/src/main/java/org/apache/log4j/MDC.java
+++ b/src/main/java/org/apache/log4j/MDC.java
@@ -45,7 +45,7 @@ public class MDC {
 
     static final int HT_SIZE = 7;
 
-    // boolean java1;
+    boolean java1;
 
     Object tlm;