diff --git a/apps/tools/serializers/tool.py b/apps/tools/serializers/tool.py
index 3a2955024..38592253b 100644
--- a/apps/tools/serializers/tool.py
+++ b/apps/tools/serializers/tool.py
@@ -332,7 +332,7 @@ class ToolSerializer(serializers.Serializer):
                 mk_instance = ToolInstance(tool_dict, 'v2')
                 tool_pickle = pickle.dumps(mk_instance)
                 response = HttpResponse(content_type='text/plain', content=tool_pickle)
-                response['Content-Disposition'] = f'attachment; filename="{tool.name}.fx"'
+                response['Content-Disposition'] = f'attachment; filename="{tool.name}.tool"'
                 return response
             except Exception as e:
                 return result.error(str(e), response_status=status.HTTP_500_INTERNAL_SERVER_ERROR)
diff --git a/ui/src/api/tool/tool.ts b/ui/src/api/tool/tool.ts
index c2f7b6981..c1985ef1f 100644
--- a/ui/src/api/tool/tool.ts
+++ b/ui/src/api/tool/tool.ts
@@ -99,7 +99,7 @@ const putToolIcon: (
 }
 
 const exportTool = (id: string, name: string, loading?: Ref<boolean>) => {
-  return exportFile(name + '.fx', `${prefix.value}/${id}/export`, undefined, loading)
+  return exportFile(name + '.tool', `${prefix.value}/${id}/export`, undefined, loading)
 }
 
 /**