diff --git a/test/sharness/t0010-basic-commands.sh b/test/sharness/t0010-basic-commands.sh
index e9db0c6c1..8fff34c45 100755
--- a/test/sharness/t0010-basic-commands.sh
+++ b/test/sharness/t0010-basic-commands.sh
@@ -65,8 +65,10 @@ test_expect_success "All commands accept --help" '
   echo 0 > fail
   while read -r cmd
   do
-    $cmd --help </dev/null >/dev/null ||
+    $cmd --help >/dev/null ||
       { echo "$cmd doesnt accept --help"; echo 1 > fail; }
+    echo stuff | $cmd --help >/dev/null ||
+      { echo "$cmd doesnt accept --help when using stdin"; echo 1 > fail; }
   done <commands.txt
 
   if [ $(cat fail) = 1 ]; then