Reported-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 tests/docker/common.rc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/docker/common.rc b/tests/docker/common.rc
index 02cd67a8c5e..b27ce17e333 100755
--- a/tests/docker/common.rc
+++ b/tests/docker/common.rc
@@ -47,7 +47,7 @@ build_qemu()
 check_qemu()
 {
     # default to make check unless the caller specifies
-    if test -z "$@"; then
+    if [ $# == 0 ]; then
         INVOCATION="check"
     else
         INVOCATION="$@"
-- 
2.20.1