diff --git a/taglib/toolkit/taglib.h b/taglib/toolkit/taglib.h
index da7053ad..418d6d02 100644
--- a/taglib/toolkit/taglib.h
+++ b/taglib/toolkit/taglib.h
@@ -99,8 +99,8 @@ namespace TagLib {
     RefCounter() : refCount(1) {}
 
 #ifdef TAGLIB_ATOMIC_MAC
-    void ref() { OSAtomicIncrement32(&refCount); }
-    bool deref() { return ! OSAtomicDecrement32(&refCount); }
+    void ref() { OSAtomicIncrement32Barrier(&refCount); }
+    bool deref() { return ! OSAtomicDecrement32Barrier(&refCount); }
     int32_t count() { return refCount; }
   private:
     volatile int32_t refCount;