diff --git a/app/api/canvas/local-edit/route.ts b/app/api/canvas/local-edit/route.ts
index 7dbc354a7..552373197 100644
--- a/app/api/canvas/local-edit/route.ts
+++ b/app/api/canvas/local-edit/route.ts
@@ -5534,6 +5534,8 @@ export async function POST(request: NextRequest) {
           scaleAdjustPatchReference?.productLockMethod || null,
         scaleAdjustProductLockMaskEditApplied:
           useScaleAdjustProductLockMaskEdit,
+        scaleAdjustRequiresProviderMaskInput:
+          useScaleAdjustProductLockMaskEdit,
         scaleAdjustProductLockEditMaskUrl:
           scaleAdjustPatchReference?.productLockEditMaskUrl || null,
         scaleAdjustProductLockOverlayUrl:
diff --git a/lib/canvas/generate-image.ts b/lib/canvas/generate-image.ts
index aca38923c..79d9b70a0 100644
--- a/lib/canvas/generate-image.ts
+++ b/lib/canvas/generate-image.ts
@@ -3421,6 +3421,19 @@ function isCanvasScaleAdjustEmergencyFalEditModel(item: CanvasModelWithProvider)
   );
 }
 
+function isCanvasScaleAdjustProviderMaskEditModel(item: CanvasModelWithProvider) {
+  if (getCanvasScaleAdjustModelFamily(item) !== "gpt-image-2") return false;
+  if (item.provider.type === "openai-image") return true;
+  if (item.provider.type !== "fal-image") return false;
+  const modelId = String(item.model.modelId || "").trim().toLowerCase();
+  return (
+    modelId === "openai/gpt-image-2/edit" ||
+    modelId === "fal-ai/gpt-image-2/edit" ||
+    modelId.endsWith("/gpt-image-2/edit") ||
+    modelId.includes("gpt-image-2/edit")
+  );
+}
+
 interface CanvasImageGenConfig {
   maxImages?: number;
   supports1K?: boolean;
@@ -3617,6 +3630,7 @@ function findCanvasFailoverModel(params: {
   failedModelRefs: string[];
   failedProviderTypes?: string[];
   preferLowCostSameNameProviders?: boolean;
+  requiresProviderMaskInput?: boolean;
   requiresImageInput?: boolean;
   requiresTextToImage?: boolean;
   scaleAdjustModelFamily?: string | null;
@@ -3675,6 +3689,12 @@ function findCanvasFailoverModel(params: {
     }
     if (failedProviderTypes.has(item.provider.type)) return false;
     if (!item.model.supportsImageGen) return false;
+    if (
+      params.requiresProviderMaskInput &&
+      !isCanvasScaleAdjustProviderMaskEditModel(item)
+    ) {
+      return false;
+    }
     if (
       params.requiresImageInput &&
       modelLacksReferenceImageInputSupport(item.model, item.provider)
@@ -3827,6 +3847,10 @@ export async function generateCanvasImage(
     typeof debugMeta?.scaleAdjustModelFamily === "string"
       ? debugMeta.scaleAdjustModelFamily.trim()
       : "";
+  const requiresProviderMaskInput = Boolean(
+    debugMeta?.scaleAdjustProductLockMaskEditApplied &&
+      debugMeta?.scaleAdjustProviderMaskImageUrl
+  );
   const localEditComposite = normalizeLocalEditCompositeConfig(
     request.localEditComposite
   );
@@ -3886,6 +3910,7 @@ export async function generateCanvasImage(
       preferLowCostSameNameProviders: Boolean(
         debugMeta?.scaleAdjustPreferSameNameProviderFailover
       ),
+      requiresProviderMaskInput,
       requiresImageInput,
       scaleAdjustModelFamily,
     });
@@ -3928,6 +3953,7 @@ export async function generateCanvasImage(
       preferLowCostSameNameProviders: Boolean(
         debugMeta?.scaleAdjustPreferSameNameProviderFailover
       ),
+      requiresProviderMaskInput,
       requiresTextToImage,
       scaleAdjustModelFamily,
     });
@@ -4594,6 +4620,7 @@ export async function generateCanvasImage(
         preferLowCostSameNameProviders: Boolean(
           debugMeta?.scaleAdjustPreferSameNameProviderFailover
         ),
+        requiresProviderMaskInput,
         requiresImageInput: normalizedReferenceImages.length > 0,
         requiresTextToImage: normalizedReferenceImages.length === 0,
         scaleAdjustModelFamily,