diff --git a/MVCNetworking/Networking/QRunLoopOperation.m b/MVCNetworking/Networking/QRunLoopOperation.m
index ab75aa2c..074b4113 100644
--- a/MVCNetworking/Networking/QRunLoopOperation.m
+++ b/MVCNetworking/Networking/QRunLoopOperation.m
@@ -352,7 +352,7 @@ - (void)cancel
         runCancelOnRunLoopThread = ! oldValue && self.state == kQRunLoopOperationStateExecuting;
     }
     if (runCancelOnRunLoopThread) {
-        [self performSelector:@selector(cancelOnRunLoopThread) onThread:self.actualRunLoopThread withObject:nil waitUntilDone:YES modes:[self.actualRunLoopModes allObjects]];
+        [self performSelector:@selector(cancelOnRunLoopThread) onThread:self.actualRunLoopThread withObject:nil waitUntilDone:NO modes:[self.actualRunLoopModes allObjects]];
     }
 }