diff --git a/build/autoconf/wrapper.m4 b/build/autoconf/wrapper.m4
index 50f3ce28325..ebe8250b826 100644
--- a/build/autoconf/wrapper.m4
+++ b/build/autoconf/wrapper.m4
@@ -66,9 +66,9 @@ if test "$COMPILER_WRAPPER" != "no"; then
         _SUBDIR_CXX="$CXX"
         ac_cv_prog_CC="$CC"
         ac_cv_prog_CXX="$CXX"
-        MOZ_USING_COMPILER_WRAPPER=1
         ;;
     esac
+    MOZ_USING_COMPILER_WRAPPER=1
 fi
 
 AC_SUBST(MOZ_USING_COMPILER_WRAPPER)