diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8e63a5a..d8a6667 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -109,7 +109,7 @@ if(ENABLE_WATCHDOG)
         src/gameparser.cpp)
 endif()
 
-if(UNIX AND NOT APPLE)
+if(ENABLE_WATCHDOG)
     set(LIBRARIES ${LIBRARIES}
             X11
             Xcomposite