diff --git a/pkgs/by-name/we/weblate/package.nix b/pkgs/by-name/we/weblate/package.nix
index d2c7f00cb18d..892d9a778806 100644
--- a/pkgs/by-name/we/weblate/package.nix
+++ b/pkgs/by-name/we/weblate/package.nix
@@ -111,7 +111,7 @@ python3Packages.buildPythonApplication (finalAttrs: {
       ];
     in
     lib.concatMap (
-      p: if lib.elem p.pname coreDeps then [ ] else [ p.pname ]
+      p: if p == null || lib.elem p.pname coreDeps then [ ] else [ p.pname ]
     ) finalAttrs.passthru.dependencies;
 
   dependencies =