diff --git a/web-app/src/lib/completion.ts b/web-app/src/lib/completion.ts
index 9c81a4034..4d30f0750 100644
--- a/web-app/src/lib/completion.ts
+++ b/web-app/src/lib/completion.ts
@@ -182,6 +182,13 @@ export const sendCompletion = async (
         'X-Title': 'Jan',
       },
     }),
+    // Add Origin header for local providers to avoid CORS issues
+    ...((provider.base_url?.includes('localhost:') || provider.base_url?.includes('127.0.0.1:')) && {
+      fetch: getServiceHub().providers().fetch(),
+      defaultHeaders: {
+        'Origin': 'tauri://localhost',
+      },
+    }),
   } as ExtendedConfigOptions)
 
   if (
diff --git a/web-app/src/services/providers/tauri.ts b/web-app/src/services/providers/tauri.ts
index bd1751447..d1554e3cf 100644
--- a/web-app/src/services/providers/tauri.ts
+++ b/web-app/src/services/providers/tauri.ts
@@ -143,6 +143,12 @@ export class TauriProvidersService extends DefaultProvidersService {
         'Content-Type': 'application/json',
       }
 
+      // Add Origin header for local providers to avoid CORS issues
+      // Some local providers (like Ollama) require an Origin header
+      if (provider.base_url.includes('localhost:') || provider.base_url.includes('127.0.0.1:')) {
+        headers['Origin'] = 'tauri://localhost'
+      }
+
       // Only add authentication headers if API key is provided
       if (provider.api_key) {
         headers['x-api-key'] = provider.api_key