1 files changed, 5 insertions, 1 deletions
diff --git a/tvix/eval/src/value/attrs.rs b/tvix/eval/src/value/attrs.rs
index fddf0b582ccb..b8ae51bf48fc 100644
--- a/tvix/eval/src/value/attrs.rs
+++ b/tvix/eval/src/value/attrs.rs
@@ -286,7 +286,11 @@ impl NixAttrs {
                     continue;
                 }
 
-                other => panic!("unexpected attribute key: {} :: {}", other, other.type_of()),
+                other => {
+                    return Err(ErrorKind::InvalidAttributeName {
+                        given: other.type_of(),
+                    })
+                }
             }
         }