diff --git a/ctx.h b/ctx.h
index b2640035..be7dc06d 100644
--- a/ctx.h
+++ b/ctx.h
@@ -48,7 +48,7 @@ extern struct dill_ctx dill_ctx_;
 #define dill_getctx \
     (dill_fast(dill_ctx_.initialized) ? &dill_ctx_ : dill_ctx_init())
 
-#elif defined __GNUC__ && !defined DILL_THREAD_FALLBACK
+#elif defined __GNUC__ && !defined __APPLE__ && !defined DILL_THREAD_FALLBACK
 
 extern __thread struct dill_ctx dill_ctx_;
 #define dill_getctx \