diff --git a/CMakeLists.txt b/CMakeLists.txt
index 14f23e8..993f0e1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,7 +7,7 @@ if(MSVC)
   set(COMPILE_DEFINITIONS /O2 /fp:fast)
   set(COMPILE_OPTIONS )
 else()
-  set(COMPILE_OPTIONS -Ofast)
+  set(COMPILE_OPTIONS -O3)
 endif()
 
 #####################