diff --git a/YYAsyncLayer/YYAsyncLayer.m b/YYAsyncLayer/YYAsyncLayer.m
index 203db19..b423837 100644
--- a/YYAsyncLayer/YYAsyncLayer.m
+++ b/YYAsyncLayer/YYAsyncLayer.m
@@ -43,8 +43,7 @@ static dispatch_queue_t YYAsyncLayerGetDisplayQueue() {
             }
         }
     });
-    int32_t cur = OSAtomicIncrement32(&counter);
-    if (cur < 0) cur = -cur;
+    uint32_t cur = (uint32_t)OSAtomicIncrement32(&counter);
     return queues[(cur) % queueCount];
 #undef MAX_QUEUE_COUNT
 #endif