diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5aaba37c..304f7e2e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -187,9 +187,12 @@ add_library (mist
   ${libHeaders}
   ${libSources} 
 )
+if (NOT APPLE)
+  set (LIBRT -lrt)
+endif()
 target_link_libraries(mist 
   -lpthread 
-  -lrt
+  ${LIBRT}
 )
 install(
   FILES ${libHeaders}