diff --git a/t/t8011-blame-split-file.sh b/t/t8011-blame-split-file.sh
index 831125047b..bdda0c03fe 100755
--- a/t/t8011-blame-split-file.sh
+++ b/t/t8011-blame-split-file.sh
@@ -54,7 +54,7 @@ test_expect_success 'setup simulated porcelain' '
 	cat >read-porcelain.pl <<-\EOF
 	my $field = shift;
 	while (<>) {
-		if (/^[0-9a-f]{40} /) {
+		if (/^[0-9a-f]{40,} /) {
 			flush();
 			$hash = $&;
 		} elsif (/^$field (.*)/) {