diff --git a/Makefile b/Makefile
index 42adedcf09..497004d5ca 100644
--- a/Makefile
+++ b/Makefile
@@ -137,7 +137,7 @@ ifeq ($(origin MENUSELECT_CFLAGS),undefined)
   MENUSELECT_CFLAGS?=$(shell grep MENUSELECT_CFLAGS $(GLOBAL_MAKEOPTS) . | cut -f2 -d'=')
 endif
 
-ifeq ($(findstring dont-optimize,$(MAKECMDGOALS)),$(findstring DONT_OPTIMIZE,$(MENUSELECT_CFLAGS)),)
+ifeq ($(findstring dont-optimize,$(MAKECMDGOALS)),$(findstring DONT_OPTIMIZE,$(MENUSELECT_CFLAGS)))
 # More GSM codec optimization
 # Uncomment to enable MMXTM optimizations for x86 architecture CPU's
 # which support MMX instructions.  This should be newer pentiums,