diff --git a/evennia/commands/default/building.py b/evennia/commands/default/building.py
index 35a651f536..53b710d97c 100644
--- a/evennia/commands/default/building.py
+++ b/evennia/commands/default/building.py
@@ -3086,7 +3086,7 @@ class CmdSpawn(COMMAND_DEFAULT_CLASS):
                 return
             elif nprots > 1:
                 caller.msg("Found {} prototypes matching '{}':\n  {}".format(
-                    nprots, prototype, ", ".join(prot.get('prototype_key', '')
+                    nprots, prototype, ", ".join(proto.get('prototype_key', '')
                                                  for proto in prototypes)))
                 return
             # we have a prototype, check access