diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5efc591f5..6a3e83d2f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -859,7 +859,7 @@ IF(APPLE)
                 SET(OSG_DEFAULT_IMAGE_PLUGIN_FOR_OSX "imageio" CACHE STRING "Forced imageio default image plugin for OSX" FORCE)
                 # 64 Bit Works, PPC is not supported any more
                 SET(CMAKE_OSX_ARCHITECTURES "i386;x86_64" CACHE STRING "Build architectures for OSX" FORCE)
-                SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mmacosx-version-min=10.7 -ftree-vectorize -fvisibility-inlines-hidden" CACHE STRING "Flags used by the compiler during all build types." FORCE)
+                SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mmacosx-version-min=10.7 -fvisibility-inlines-hidden" CACHE STRING "Flags used by the compiler during all build types." FORCE)
             ELSEIF(${OSG_OSX_SDK_NAME} STREQUAL "macosx10.6" /
                    ${OSG_OSX_SDK_NAME} STREQUAL "macosx10.5")
                 SET(OSG_DEFAULT_IMAGE_PLUGIN_FOR_OSX "imageio" CACHE STRING "Forced imageio default image plugin for OSX" FORCE)