diff --git a/cmake/compile_definitions/macos.cmake b/cmake/compile_definitions/macos.cmake
index e2455bc6d51..9d445869b1a 100644
--- a/cmake/compile_definitions/macos.cmake
+++ b/cmake/compile_definitions/macos.cmake
@@ -7,9 +7,9 @@ set(MACOS_LINK_DIRECTORIES
         /opt/local/lib
         /usr/local/lib)
 
-foreach(DIR ${MACOS_LINK_DIRECTORIES})
-    if(EXISTS ${DIR})
-        link_directories(${DIR})
+foreach(dir ${MACOS_LINK_DIRECTORIES})
+    if(EXISTS ${dir})
+        link_directories(${dir})
     endif()
 endforeach()