diff --git a/test/common/autotest_common.sh b/test/common/autotest_common.sh
index 1111da40d..f6647484f 100755
--- a/test/common/autotest_common.sh
+++ b/test/common/autotest_common.sh
@@ -1046,11 +1046,11 @@ function waitforserial() {
 		nvme_device_counter=$2
 	fi
 
-	# Wait initially for min 2s to make sure all devices are ready for use. It seems
+	# Wait initially for min 4s to make sure all devices are ready for use. It seems
 	# that we may be racing with a kernel where in some cases immediate disconnect may
 	# leave dangling subsystem with no-op block devices which can't be used nor removed
 	# (unless kernel is rebooted) and which start to negatively affect all the tests.
-	sleep 2
+	sleep 4
 	while ((i++ <= 15)); do
 		nvme_devices=$(lsblk -l -o NAME,SERIAL | grep -c "$1")
 		((nvme_devices == nvme_device_counter)) && return 0