diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7f47988b..6b05be91 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -82,9 +82,13 @@ elseif(UNIX)
 	# Ofast doesn't work with gcc builds
 	if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
 		set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -Ofast \
-			-fno-signed-zeros -freciprocal-math -ffp-contract=fast -fcommon \
+			-fno-signed-zeros -freciprocal-math -ffp-contract=fast \
                         -fno-threadsafe-statics -fslp-vectorize-aggressive -fslp-vectorize \
-		     	-fno-stack-protector -fstrict-enums -fstrict-vtable-pointers")
+		     	-fno-stack-protector -fstrict-enums -fstrict-vtable-pointers \
+			-fno-coverage-mapping -fno-spell-checking -fshort-enums \
+			-finline-hint-functions -fvectorize -fwhole-program-vtables ")
+		#-fno-common -finline-functions
+
 		set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -ggdb")
 
 		if ("${CMAKE_BUILD_TYPE}" STREQUAL "Release")