diff --git a/Makefile.x86 b/Makefile.x86
index 893379c33..25ca660bd 100644
--- a/Makefile.x86
+++ b/Makefile.x86
@@ -1,6 +1,6 @@
 # COMPILER_PREFIX = mingw32-
 
-ifndef DYNAMIC_ARCH
+ifneq ($(DYNAMIC_ARCH),1)
 ADD_CPUFLAGS = 1
 else
 ifdef TARGET_CORE
diff --git a/Makefile.x86_64 b/Makefile.x86_64
index f62ab9e5e..307cbe1d9 100644
--- a/Makefile.x86_64
+++ b/Makefile.x86_64
@@ -9,7 +9,7 @@ endif
 endif
 
 
-ifndef DYNAMIC_ARCH
+ifneq ($(DYNAMIC_ARCH),1)
 ADD_CPUFLAGS = 1
 else
 ifdef TARGET_CORE