diff --git a/src/Makefile b/src/Makefile
index c21dcc69d4e..2023d9ed0fd 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -45,10 +45,6 @@ ifeq ($(CFG_OSTYPE), Linux)
   endif
 endif
 
-ifdef NO_VALGRIND
-    CFG_VALGRIND :=
-endif
-
 ifeq ($(CFG_OSTYPE), Darwin)
   CFG_RUNTIME := librustrt.dylib
   CFG_STDLIB := libstd.dylib
@@ -150,6 +146,10 @@ else
   $(info cfg: building bytecode compiler)
 endif
 
+ifdef NO_VALGRIND
+    CFG_VALGRIND :=
+endif
+
 ifneq ($(CFG_LLVM_CONFIG),)
   CFG_LLVM_CONFIG := $(shell which $(CFG_LLVM_CONFIG))
 endif