diff --git a/tests/qemu-iotests-quick.sh b/tests/qemu-iotests-quick.sh
index 12af731c68..0e554bb972 100755
--- a/tests/qemu-iotests-quick.sh
+++ b/tests/qemu-iotests-quick.sh
@@ -3,6 +3,6 @@
 cd tests/qemu-iotests
 
 ret=0
-./check -T -qcow2 -g quick || ret=1
+TEST_DIR=${TEST_DIR:-/tmp/qemu-iotests-quick-$$} ./check -T -qcow2 -g quick || ret=1
 
 exit $ret
diff --git a/tests/qemu-iotests/check b/tests/qemu-iotests/check
index 8ca40116d7..baeae80f96 100755
--- a/tests/qemu-iotests/check
+++ b/tests/qemu-iotests/check
@@ -238,6 +238,7 @@ QEMU_NBD      -- $QEMU_NBD
 IMGFMT        -- $FULL_IMGFMT_DETAILS
 IMGPROTO      -- $FULL_IMGPROTO_DETAILS
 PLATFORM      -- $FULL_HOST_DETAILS
+TEST_DIR      -- $TEST_DIR
 SOCKET_SCM_HELPER -- $SOCKET_SCM_HELPER
 
 EOF