diff --git a/test.sh b/test.sh
index 317a752..10456ff 100755
--- a/test.sh
+++ b/test.sh
@@ -158,9 +158,9 @@ check_gold 0 gold-identical-on.txt tests/input-{1,1}.txt -s
 check_gold 2 gold-bad-encoding.txt tests/input-{1,2}.txt --encoding=nonexistend_encoding
 check_gold 0 gold-recursive-with-exclude.txt --recursive -x c tests/{a,b} --cols=80
 check_gold 1 gold-recursive-with-exclude2.txt --recursive -x 'excl*' tests/test-with-exclude/{a,b} --cols=80
-check_gold 0 gold-exit-process-sub tests/input-1.txt <(cat tests/input-1.txt) --cols=80
+check_gold 0 gold-exit-process-sub tests/input-1.txt <(cat tests/input-1.txt) --no-headers --cols=80
 
-rm tests/permissions-{a,b}
+rm -f tests/permissions-{a,b}
 touch tests/permissions-{a,b}
 check_gold 0 gold-permissions-same.txt tests/permissions-{a,b} -P --cols=80
 
@@ -173,7 +173,7 @@ check_gold 1 gold-permissions-diff-text.txt tests/permissions-{a,b} -P --cols=80
 
 echo -e "\04" >> tests/permissions-b
 check_gold 1 gold-permissions-diff-binary.txt tests/permissions-{a,b} -P --cols=80
-rm tests/permissions-{a,b}
+rm -f tests/permissions-{a,b}
 
 if git show 4e86205629 &> /dev/null; then
   # We're in the repo, so test git.
@@ -209,7 +209,7 @@ function ensure_installed() {
 
 ensure_installed "black"
 echo 'Running black formatter...'
-if ! black icdiff --line-length 79 --check; then
+if ! black icdiff --quiet --line-length 79 --check; then
   echo ""
   echo 'Consider running `black icdiff --line-length 79`'
   fail
diff --git a/tests/gold-exit-process-sub b/tests/gold-exit-process-sub
index 3885e20..e69de29 100644
--- a/tests/gold-exit-process-sub
+++ b/tests/gold-exit-process-sub
@@ -1 +0,0 @@
-tests/input-1.txt                       /dev/fd/63