diff --git a/ui/frontend/build_src/src/components/creationPanel/advancedSettings/index.tsx b/ui/frontend/build_src/src/components/creationPanel/advancedSettings/index.tsx
index 10c603ee..9f7cf63c 100644
--- a/ui/frontend/build_src/src/components/creationPanel/advancedSettings/index.tsx
+++ b/ui/frontend/build_src/src/components/creationPanel/advancedSettings/index.tsx
@@ -112,6 +112,9 @@ function SettingsList() {
             name="upscale_model"
             disabled={!isUsingUpscaling}
             value={use_upscale}
+            onChange={(e) => {
+              setRequestOption("use_upscale", e.target.value);
+            }}
           >
             <option value="RealESRGAN_x4plus">RealESRGAN_x4plus</option>
             <option value="RealESRGAN_x4plus_anime_6B">
diff --git a/ui/frontend/build_src/src/store/imageCreateStore.ts b/ui/frontend/build_src/src/store/imageCreateStore.ts
index 8b5d89cd..34f9d814 100644
--- a/ui/frontend/build_src/src/store/imageCreateStore.ts
+++ b/ui/frontend/build_src/src/store/imageCreateStore.ts
@@ -239,7 +239,7 @@ export const useImageCreate = create<ImageCreateState>(
           state.requestOptions.use_upscale = state.uiOptions
             .isCheckedUseUpscaling
             ? "RealESRGAN_x4plus"
-            : null;
+            : undefined;
           localStorage.setItem(
             "ui:isCheckedUseUpscaling",
             state.uiOptions.isCheckedUseUpscaling