diff --git a/waifu2x-caffe-gui/Source.cpp b/waifu2x-caffe-gui/Source.cpp
index 0f150bb..9104ed8 100644
--- a/waifu2x-caffe-gui/Source.cpp
+++ b/waifu2x-caffe-gui/Source.cpp
@@ -529,7 +529,8 @@ public:
 		if (processThread.joinable())
 			return;
 
-		SyncMember(false);
+		if (!SyncMember(false))
+			return;
 
 		if (input_str.length() == 0)
 		{