diff --git a/api/onnx_web/chain/upscale.py b/api/onnx_web/chain/upscale.py
index 54a1754b..faafdb91 100644
--- a/api/onnx_web/chain/upscale.py
+++ b/api/onnx_web/chain/upscale.py
@@ -67,31 +67,33 @@ def stage_upscale_correction(
         **kwargs,
         "upscale": upscale,
     }
+
     upscale_stage: Optional[PipelineStage] = None
-    if "bsrgan" in upscale.upscale_model:
-        bsrgan_params = StageParams(
-            tile_size=stage.tile_size,
-            outscale=upscale.outscale,
-        )
-        upscale_stage = (UpscaleBSRGANStage(), bsrgan_params, upscale_opts)
-    elif "esrgan" in upscale.upscale_model:
-        esrgan_params = StageParams(
-            tile_size=stage.tile_size,
-            outscale=upscale.outscale,
-        )
-        upscale_stage = (UpscaleRealESRGANStage(), esrgan_params, upscale_opts)
-    elif "stable-diffusion" in upscale.upscale_model:
-        mini_tile = min(SizeChart.mini, stage.tile_size)
-        sd_params = StageParams(tile_size=mini_tile, outscale=upscale.outscale)
-        upscale_stage = (UpscaleStableDiffusionStage(), sd_params, upscale_opts)
-    elif "swinir" in upscale.upscale_model:
-        swinir_params = StageParams(
-            tile_size=stage.tile_size,
-            outscale=upscale.outscale,
-        )
-        upscale_stage = (UpscaleSwinIRStage(), swinir_params, upscale_opts)
-    else:
-        logger.warning("unknown upscaling model: %s", upscale.upscale_model)
+    if upscale.upscale:
+        if "bsrgan" in upscale.upscale_model:
+            bsrgan_params = StageParams(
+                tile_size=stage.tile_size,
+                outscale=upscale.outscale,
+            )
+            upscale_stage = (UpscaleBSRGANStage(), bsrgan_params, upscale_opts)
+        elif "esrgan" in upscale.upscale_model:
+            esrgan_params = StageParams(
+                tile_size=stage.tile_size,
+                outscale=upscale.outscale,
+            )
+            upscale_stage = (UpscaleRealESRGANStage(), esrgan_params, upscale_opts)
+        elif "stable-diffusion" in upscale.upscale_model:
+            mini_tile = min(SizeChart.mini, stage.tile_size)
+            sd_params = StageParams(tile_size=mini_tile, outscale=upscale.outscale)
+            upscale_stage = (UpscaleStableDiffusionStage(), sd_params, upscale_opts)
+        elif "swinir" in upscale.upscale_model:
+            swinir_params = StageParams(
+                tile_size=stage.tile_size,
+                outscale=upscale.outscale,
+            )
+            upscale_stage = (UpscaleSwinIRStage(), swinir_params, upscale_opts)
+        else:
+            logger.warning("unknown upscaling model: %s", upscale.upscale_model)
 
     correct_stage: Optional[PipelineStage] = None
     if upscale.faces:
diff --git a/api/onnx_web/params.py b/api/onnx_web/params.py
index f4b74659..b3e03670 100644
--- a/api/onnx_web/params.py
+++ b/api/onnx_web/params.py
@@ -391,6 +391,7 @@ class UpscaleParams:
         upscale_model: str,
         correction_model: Optional[str] = None,
         denoise: float = 0.5,
+        upscale=True,
         faces=True,
         face_outscale: int = 1,
         face_strength: float = 0.5,
@@ -406,6 +407,7 @@ class UpscaleParams:
         self.upscale_model = upscale_model
         self.correction_model = correction_model
         self.denoise = denoise
+        self.upscale = upscale
         self.faces = faces
         self.face_outscale = face_outscale
         self.face_strength = face_strength
@@ -421,6 +423,7 @@ class UpscaleParams:
             self.upscale_model,
             correction_model=self.correction_model,
             denoise=self.denoise,
+            upscale=self.upscale,
             faces=self.faces,
             face_outscale=self.face_outscale,
             face_strength=self.face_strength,
@@ -447,6 +450,7 @@ class UpscaleParams:
             "upscale_model": self.upscale_model,
             "correction_model": self.correction_model,
             "denoise": self.denoise,
+            "upscale": self.upscale,
             "faces": self.faces,
             "face_outscale": self.face_outscale,
             "face_strength": self.face_strength,
@@ -463,6 +467,7 @@ class UpscaleParams:
             kwargs.get("upscale_model", self.upscale_model),
             kwargs.get("correction_model", self.correction_model),
             kwargs.get("denoise", self.denoise),
+            kwargs.get("upscale", self.upscale),
             kwargs.get("faces", self.faces),
             kwargs.get("face_outscale", self.face_outscale),
             kwargs.get("face_strength", self.face_strength),
diff --git a/api/onnx_web/server/params.py b/api/onnx_web/server/params.py
index 39468542..b19f541a 100644
--- a/api/onnx_web/server/params.py
+++ b/api/onnx_web/server/params.py
@@ -239,6 +239,7 @@ def build_upscale(
     if data is None:
         data = request.args
 
+    upscale = get_boolean(data, "upscale", False)
     denoise = get_and_clamp_float(
         data,
         "denoise",
@@ -262,7 +263,8 @@ def build_upscale(
     )
     upscaling = get_from_list(data, "upscaling", get_upscaling_models())
     correction = get_from_list(data, "correction", get_correction_models())
-    faces = get_not_empty(data, "faces", "false") == "true"
+
+    faces = get_boolean(data, "faces", False)
     face_outscale = get_and_clamp_int(
         data,
         "faceOutscale",
@@ -283,6 +285,7 @@ def build_upscale(
         upscaling,
         correction_model=correction,
         denoise=denoise,
+        upscale=upscale,
         faces=faces,
         face_outscale=face_outscale,
         face_strength=face_strength,
diff --git a/gui/src/client/api.ts b/gui/src/client/api.ts
index e2c974f6..8ea871ea 100644
--- a/gui/src/client/api.ts
+++ b/gui/src/client/api.ts
@@ -110,6 +110,7 @@ export function appendModelToURL(url: URL, params: ModelParams) {
  * Append the upscale parameters to an existing URL.
  */
 export function appendUpscaleToURL(url: URL, upscale: UpscaleParams) {
+  url.searchParams.append('upscale', String(upscale.enabled));
   url.searchParams.append('upscaleOrder', upscale.upscaleOrder);
 
   if (upscale.enabled) {