diff --git a/Makefile.def b/Makefile.def
index 1e1da89103b..9eaa7016d81 100644
--- a/Makefile.def
+++ b/Makefile.def
@@ -172,7 +172,7 @@ flags_to_pass = { flag= target_alias ; };
 
 // Build tools
 flags_to_pass = { flag= BISON ; };
-flags_to_pass = { flag= CC_FOR_BUILD };
+flags_to_pass = { flag= CC_FOR_BUILD ; };
 flags_to_pass = { flag= CXX_FOR_BUILD ; };
 flags_to_pass = { flag= EXPECT ; };
 flags_to_pass = { flag= INSTALL ; };