diff --git a/src/errors.h b/src/errors.h
index e610d28..ad3242c 100644
--- a/src/errors.h
+++ b/src/errors.h
@@ -383,3 +383,7 @@
 	INIT(= N_("E1172: Cannot use default values in a lambda"));
 EXTERN char e_text_found_after_enddef_str[]
 	INIT(= N_("E1173: Text found after enddef: %s"));
+EXTERN char e_string_required_for_argument_nr[]
+	INIT(= N_("E1174: String required for argument %d"));
+EXTERN char e_non_empty_string_required_for_argument_nr[]
+	INIT(= N_("E1142: Non-empty string required for argument %d"));