diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8553efdf4a..bb7ecfe4e1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -714,9 +714,9 @@ else()
 	set(CMAKE_CXX_FLAGS       "${LYX_CXX_FLAGS} -fno-strict-aliasing " CACHE STRING "Set CXX flags" FORCE)
 	set(CMAKE_CXX_FLAGS_DEBUG "-O0 -g3 -D_DEBUG" CACHE STRING "Set debug flags" FORCE)
 	if(MINGW)
-		set(CMAKE_CXX_FLAGS_RELEASE "-O2 -DNDEBUG" CACHE STRING "Set release flags for Mingw" FORCE)
+		set(CMAKE_CXX_FLAGS_RELEASE "-O2 -march=native -pipe -DNDEBUG" CACHE STRING "Set release flags for Mingw" FORCE)
 	else()
-		set(CMAKE_CXX_FLAGS_RELEASE "-O3 -DNDEBUG" CACHE STRING "Set release flags" FORCE)
+		set(CMAKE_CXX_FLAGS_RELEASE "-O3 -march=native -pipe -DNDEBUG" CACHE STRING "Set release flags" FORCE)
 	endif()
 endif()