diff --git a/interface/CMakeLists.txt b/interface/CMakeLists.txt
index 0aaf180047..f73cf0fd64 100644
--- a/interface/CMakeLists.txt
+++ b/interface/CMakeLists.txt
@@ -139,7 +139,8 @@ if (VISAGE_FOUND AND NOT DISABLE_VISAGE)
     include_directories(SYSTEM "${VISAGE_INCLUDE_DIRS}")
     if (APPLE)
         add_definitions(-DMAC_OS_X)
-        SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-comment -isystem ${VISAGE_INCLUDE_DIRS}")
+        SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-comment")
+        include_directories(SYSTEM "${VISAGE_INCLUDE_DIRS}")
         find_library(AVFoundation AVFoundation)
         find_library(CoreMedia CoreMedia)
         find_library(NEW_STD_LIBRARY libc++.dylib /usr/lib/)