diff --git a/projects/Closure/52/com/google/javascript/jscomp/CodeGenerator.java b/projects/Closure/52/com/google/javascript/jscomp/CodeGenerator.java
index ac6299d..535148c 100644
--- a/projects/Closure/52/com/google/javascript/jscomp/CodeGenerator.java
+++ b/projects/Closure/52/com/google/javascript/jscomp/CodeGenerator.java
@@ -742,7 +742,7 @@ static boolean isSimpleNumber(String s) {
         return false;
       }
     }
-    return len > 0;
+    return len > 0 && s.charAt(0) != '0';
   }
 
   static double getSimpleNumber(String s) {