diff --git a/pkgs/build-support/node/import-npm-lock/default.nix b/pkgs/build-support/node/import-npm-lock/default.nix
index 7442d48bad16..d80643d60a32 100644
--- a/pkgs/build-support/node/import-npm-lock/default.nix
+++ b/pkgs/build-support/node/import-npm-lock/default.nix
@@ -27,7 +27,7 @@ let
       fetcherOpts,
     }:
     (
-      if module ? "resolved" then
+      if module ? "resolved" && module.resolved != null then
         (
           let
             # Parse scheme from URL