diff --git a/api/onnx_web/chain/upscale.py b/api/onnx_web/chain/upscale.py
index f8880802..54a1754b 100644
--- a/api/onnx_web/chain/upscale.py
+++ b/api/onnx_web/chain/upscale.py
@@ -68,31 +68,30 @@ def stage_upscale_correction(
         "upscale": upscale,
     }
     upscale_stage: Optional[PipelineStage] = None
-    if upscale.scale > 1:
-        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 "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: