diff --git a/ofborg/src/nix.rs b/ofborg/src/nix.rs
index 80a5205..e0bb21a 100644
--- a/ofborg/src/nix.rs
+++ b/ofborg/src/nix.rs
@@ -752,7 +752,7 @@ mod tests {
         assert_run(
             ret,
             Expect::Fail,
-            vec!["You just can't", "assertion failed"],
+            vec!["You just can't", "assertion", "failed"],
         );
     }