diff --git a/src/errors.h b/src/errors.h
index ad36e33..2811a32 100644
--- a/src/errors.h
+++ b/src/errors.h
@@ -2738,7 +2738,8 @@
 	INIT(= N_("E1043: Invalid command after :export"));
 EXTERN char e_export_with_invalid_argument[]
 	INIT(= N_("E1044: Export with invalid argument"));
-// E1045 not used
+EXTERN char e_import_nesting_too_deep[]
+        INIT(= N_("E1045: Import nesting too deep"));
 // E1046 not used
 EXTERN char e_syntax_error_in_import_str[]
 	INIT(= N_("E1047: Syntax error in import: %s"));