diff --git a/include/wx/atomic.h b/include/wx/atomic.h
index 1439d29484..25bd049834 100644
--- a/include/wx/atomic.h
+++ b/include/wx/atomic.h
@@ -57,7 +57,7 @@ inline wxUint32 wxAtomicDec (wxUint32 &value)
     return InterlockedDecrement ((LONG*)&value);
 }
 
-#elif defined(__WXMAC__) || defined(__DARWIN__)
+#elif defined(__DARWIN__)
 
 #include "libkern/OSAtomic.h"
 inline void wxAtomicInc (wxUint32 &value)