diff --git a/lib/Bytecode/Reader/ReaderInternals.h b/lib/Bytecode/Reader/ReaderInternals.h
index 3a8dbb8c2a9..50eed193939 100644
--- a/lib/Bytecode/Reader/ReaderInternals.h
+++ b/lib/Bytecode/Reader/ReaderInternals.h
@@ -16,7 +16,7 @@
 #include <list>
 
 // Enable to trace to figure out what the heck is going on when parsing fails
-#define TRACE_LEVEL 10
+#define TRACE_LEVEL 0
 
 #if TRACE_LEVEL    // ByteCodeReading_TRACEer
 #include "llvm/Assembly/Writer.h"