diff --git a/nc_optimisation.cmake b/nc_optimisation.cmake
index 6f042b6..ade173d 100644
--- a/nc_optimisation.cmake
+++ b/nc_optimisation.cmake
@@ -83,9 +83,9 @@ if (${host_cpu} STREQUAL "x86_64")
     append_compile_flag(-msse)
     append_compile_flag(-msse2)
     append_compile_flag(-mssse3)
+    append_compile_flag(-msse3)
+    append_compile_flag(-mavx)
 
-    append_compile_flag(-mno-sse3)
-    append_compile_flag(-mno-avx)
     append_compile_flag(-mno-avx2)
 
     # These instructions should always be available on reasonable platforms.