diff --git a/web/ui/mantine-ui/src/pages/query/ExpressionInput.tsx b/web/ui/mantine-ui/src/pages/query/ExpressionInput.tsx
index 5ec795b08e..9c8fa7363b 100644
--- a/web/ui/mantine-ui/src/pages/query/ExpressionInput.tsx
+++ b/web/ui/mantine-ui/src/pages/query/ExpressionInput.tsx
@@ -132,7 +132,7 @@ const ExpressionInput: FC<ExpressionInputProps> = ({
     refetch: formatQuery,
   } = useAPIQuery<string>({
     key: expr,
-    path: "format_query",
+    path: "/format_query",
     params: {
       query: expr,
     },