diff --git a/developer/src/kmcmpdll/Compiler.cpp b/developer/src/kmcmpdll/Compiler.cpp
index a56f418448..7a56830519 100644
--- a/developer/src/kmcmpdll/Compiler.cpp
+++ b/developer/src/kmcmpdll/Compiler.cpp
@@ -289,7 +289,7 @@ BOOL AddCompileMessage(DWORD msg)
   return FALSE;
 }
 
-bool flag_use_new_kmcomp  = true;   // flag to switch to kmcompx
+bool flag_use_new_kmcomp  = false;   // flag to switch to kmcompx
 
 extern "C" BOOL __declspec(dllexport) SetCompilerOptions(PCOMPILER_OPTIONS options) {