diff --git a/ofborg/src/tasks/massrebuilder.rs b/ofborg/src/tasks/massrebuilder.rs
index c5df76b..19dc889 100644
--- a/ofborg/src/tasks/massrebuilder.rs
+++ b/ofborg/src/tasks/massrebuilder.rs
@@ -331,6 +331,19 @@ impl<E: stats::SysEvents + 'static> worker::SimpleWorker for MassRebuildWorker<E
                 self.nix.clone()
             ),
 
+            EvalChecker::new(
+                "package-list-no-aliases",
+                nix::Operation::QueryPackagesJSON,
+                vec![
+                    String::from("--file"),
+                    String::from("."),
+                    String::from("--arg"),
+                    String::from("config"),
+                    String::from("{ allowAliases = false; }"),
+                ],
+                self.nix.clone()
+            ),
+
             EvalChecker::new(
                 "nixos-options",
                 nix::Operation::Instantiate,