diff --git a/src/errors.h b/src/errors.h
index 3cbdb53..40925f8 100644
--- a/src/errors.h
+++ b/src/errors.h
@@ -639,3 +639,5 @@
 	INIT(= N_("E1227: List or Dictionary required for argument %d"));
 EXTERN char e_list_or_dict_or_blob_required_for_argument_nr[]
 	INIT(= N_("E1228: List or Dictionary or Blob required for argument %d"));
+EXTERN char e_expected_dictionary_for_using_key_str_but_got_str[]
+	INIT(= N_("E1229: Expected dictionary for using key \"%s\", but got %s"));