diff --git a/tests/helper/pfcli.rs b/tests/helper/pfcli.rs
index 01e4532..5eedc1e 100644
--- a/tests/helper/pfcli.rs
+++ b/tests/helper/pfcli.rs
@@ -15,7 +15,8 @@ pub fn is_enabled() -> bool {
     } else if str.starts_with("Status: Disabled") {
         false
     } else {
-        panic!("Invalid response.");
+        let stderr = str_from_stdout(&output.stderr);
+        panic!("Invalid output from pfctl ({}), stdout:\n{str}\nstderr:\n{stderr}", output.status);
     }
 }