diff --git a/cmake/cc.cmake b/cmake/cc.cmake
index 22217575c..d5551147c 100644
--- a/cmake/cc.cmake
+++ b/cmake/cc.cmake
@@ -99,7 +99,7 @@ endif ()
 if (${CORE} STREQUAL "SKYLAKEX")
   if (NOT DYNAMIC_ARCH)
     if (NOT NO_AVX512)
-      set (CCOMMON_OPT = "${CCOMMON_OPT} -march=skylake-avx512")
+      set (CCOMMON_OPT "${CCOMMON_OPT} -march=skylake-avx512")
     endif ()
   endif ()
 endif ()