diff --git a/web-app/src/hooks/useModelProvider.ts b/web-app/src/hooks/useModelProvider.ts
index 3d128f409..1148f429a 100644
--- a/web-app/src/hooks/useModelProvider.ts
+++ b/web-app/src/hooks/useModelProvider.ts
@@ -35,7 +35,7 @@ export const useModelProvider = create<ModelProviderState>()(
             const mergedModels = [
               ...models,
               ...(provider?.models ?? []).filter(
-                (e) => !provider?.models.some((m) => m.id === e.id)
+                (e) => !models.some((m) => m.id === e.id)
               ),
             ]
             return {
diff --git a/web-app/src/services/models.ts b/web-app/src/services/models.ts
index 5ea7c3f47..fe67f0388 100644
--- a/web-app/src/services/models.ts
+++ b/web-app/src/services/models.ts
@@ -194,7 +194,7 @@ export const importModel = async (
     if (!path) throw new Error('No file selected')
 
     // Extract filename from path to use as model ID if not provided
-    const defaultModelId = path.split('/').pop()?.replace(/ /g, '-') || path
+    const defaultModelId = path.split(/[/\\]/).pop()?.replace(/ /g, '-') || path
     const modelIdToUse = modelId || defaultModelId
 
     return await extension.importModel(modelIdToUse, path, provider)