diff --git a/waifu2x-caffe-gui/MainDialog.cpp b/waifu2x-caffe-gui/MainDialog.cpp
index 5e6a17f..ee8d23d 100644
--- a/waifu2x-caffe-gui/MainDialog.cpp
+++ b/waifu2x-caffe-gui/MainDialog.cpp
@@ -2015,6 +2015,7 @@ void DialogEvent::Create(HWND hWnd, WPARAM wParam, LPARAM lParam, LPVOID lpData)
 				false, L"noise_scale", &cmdModeConstraint, cmd);
 
 			std::vector<int> cmdNRLConstraintV;
+			cmdNRLConstraintV.push_back(0);
 			cmdNRLConstraintV.push_back(1);
 			cmdNRLConstraintV.push_back(2);
 			cmdNRLConstraintV.push_back(3);
diff --git a/waifu2x-caffe/Source.cpp b/waifu2x-caffe/Source.cpp
index 35473f3..f6aa9d9 100644
--- a/waifu2x-caffe/Source.cpp
+++ b/waifu2x-caffe/Source.cpp
@@ -91,6 +91,7 @@ int main(int argc, char** argv)
 		false, "noise_scale", &cmdModeConstraint, cmd);
 
 	std::vector<int> cmdNRLConstraintV;
+	cmdNRLConstraintV.push_back(0);
 	cmdNRLConstraintV.push_back(1);
 	cmdNRLConstraintV.push_back(2);
 	cmdNRLConstraintV.push_back(3);