1 files changed, 1 insertions, 1 deletions
diff --git a/grep.c b/grep.c
index 4e155ee9e6..9284b5741f 100644
--- a/grep.c
+++ b/grep.c
@@ -1517,7 +1517,7 @@ static int fill_textconv_grep(struct repository *r,
 		fill_filespec(df, gs->identifier, 1, 0100644);
 		break;
 	case GREP_SOURCE_FILE:
-		fill_filespec(df, null_oid(), 0, 0100644);
+		fill_filespec(df, null_oid(r->hash_algo), 0, 0100644);
 		break;
 	default:
 		BUG("attempt to textconv something without a path?");