diff --git a/src/undo.c b/src/undo.c
index 60172a7..52455df 100644
--- a/src/undo.c
+++ b/src/undo.c
@@ -1923,7 +1923,8 @@
 #ifdef FEAT_CRYPT
 	if (*curbuf->b_p_key == NUL)
 	{
-	    semsg(_(e_non_encrypted_file_has_encrypted_undo_file), file_name);
+	    semsg(_(e_non_encrypted_file_has_encrypted_undo_file_str),
+								    file_name);
 	    goto error;
 	}
 	bi.bi_state = crypt_create_from_file(fp, curbuf->b_p_key);