diff --git a/pkgs/build-support/node/fetch-yarn-deps/default.nix b/pkgs/build-support/node/fetch-yarn-deps/default.nix
index 7f0e0692f81f..e2724ab3a98b 100644
--- a/pkgs/build-support/node/fetch-yarn-deps/default.nix
+++ b/pkgs/build-support/node/fetch-yarn-deps/default.nix
@@ -97,7 +97,7 @@ in {
       '';
 
       outputHashMode = "recursive";
-    } // hash_ // (removeAttrs args ["src" "name" "hash" "sha256"]));
+    } // hash_ // (removeAttrs args (["name" "hash" "sha256"] ++ (lib.optional (src == null) "src"))));
 
   in lib.setFunctionArgs f (lib.functionArgs f) // {
     inherit tests;