diff --git a/t/t0021-conversion.sh b/t/t0021-conversion.sh
index cb72fa49de..5ce2535017 100755
--- a/t/t0021-conversion.sh
+++ b/t/t0021-conversion.sh
@@ -27,8 +27,7 @@ file_size () {
 
 filter_git () {
 	rm -f rot13-filter.log &&
-	git "$@" 2>git-stderr.log &&
-	rm -f git-stderr.log
+	git "$@"
 }
 
 # Compare two files and ensure that `clean` and `smudge` respectively are