diff --git a/nix-js/runtime-ts/src/builtins/io.ts b/nix-js/runtime-ts/src/builtins/io.ts
index 91bc5bc..895688a 100644
--- a/nix-js/runtime-ts/src/builtins/io.ts
+++ b/nix-js/runtime-ts/src/builtins/io.ts
@@ -185,7 +185,7 @@ export const fetchGit = (args: NixValue): NixAttrs => {
     ]);
   }
   const attrs = forceAttrs(args);
-  const url = forceStringValue(select("attrs", ["url"]));
+  const url = forceStringValue(select(attrs, ["url"]));
   const gitRef = attrs.has("ref") ? forceStringValue(attrs.get("ref") as NixValue) : null;
   const rev = attrs.has("rev") ? forceStringValue(attrs.get("rev") as NixValue) : null;
   const shallow = attrs.has("shallow") ? forceBool(attrs.get("shallow") as NixValue) : false;