diff --git a/nc_optimisation.cmake b/nc_optimisation.cmake
index d65ffe7..aecd8ba 100644
--- a/nc_optimisation.cmake
+++ b/nc_optimisation.cmake
@@ -95,8 +95,7 @@ if (${host_cpu} STREQUAL "x86_64")
     append_compile_flag(-mssse3)
     append_compile_flag(-msse3)
     append_compile_flag(-mavx)
-
-    append_compile_flag(-mno-avx2)
+    append_compile_flag(-mavx2)
 
     # These instructions should always be available on reasonable platforms.
     # They're almost 20 years old at this point.