diff --git a/CMakeLists.txt b/CMakeLists.txt
index b84795bac4..867b577261 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -515,7 +515,10 @@ SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")  # FIXME: should be -std=
 
 IF (UNIX)
   SET( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror -Wdeclaration-after-statement -Wno-pointer-sign -Wall -Wmissing-prototypes -Wmissing-declarations -Wno-unused")
-  SET( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror -Wall -Wmissing-prototypes -Wmissing-declarations -Wno-unused")
+  SET( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror -Wall -Wmissing-declarations -Wno-unused")
+  IF (APPLE)
+      SET( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wmissing-prototypes")
+    ENDIF()
   SET( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-deprecated-declarations -std=gnu11")
   SET( CMAKE_C_FLAGS_RELEASE "-O3 ${CMAKE_C_FLAGS} -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2")
 ENDIF (UNIX)