diff --git a/OpenCL/inc_simd.cl b/OpenCL/inc_simd.cl
index 25eca0fbc..d5a48dea5 100644
--- a/OpenCL/inc_simd.cl
+++ b/OpenCL/inc_simd.cl
@@ -1043,14 +1043,8 @@
 
 #endif
 
-#ifdef IS_CPU
-// CPU seem to have a bit more advanced vector comparison functions (on XOP/AVX2)
-#define MATCHES_NONE_VV(a,b) all ((a) != (b))
-#define MATCHES_NONE_VS(a,b) all ((a) != (b))
-#else
 #define MATCHES_NONE_VV(a,b) !(MATCHES_ONE_VV ((a), (b)))
 #define MATCHES_NONE_VS(a,b) !(MATCHES_ONE_VS ((a), (b)))
-#endif
 
 // attack-mode 0