diff --git a/Makefile.system b/Makefile.system
index cec4b44e5..82e38a6d2 100644
--- a/Makefile.system
+++ b/Makefile.system
@@ -477,7 +477,12 @@ ifneq ($(NO_AVX), 1)
 DYNAMIC_CORE += SANDYBRIDGE BULLDOZER PILEDRIVER STEAMROLLER EXCAVATOR
 endif
 ifneq ($(NO_AVX2), 1)
-DYNAMIC_CORE += HASWELL ZEN SKYLAKEX
+DYNAMIC_CORE += HASWELL ZEN
+endif
+ifneq ($(NO_AVX512), 1)
+ifneq ($(NO_AVX2), 1)
+DYNAMIC_CORE += SKYLAKEX
+endif
 endif
 endif