diff --git a/run/run.sh b/run/run.sh
index f0231c4..2e0dd99 100755
--- a/run/run.sh
+++ b/run/run.sh
@@ -3,8 +3,8 @@ set -eu
 
 # Docker environment variabeles
 
-: ${BOOT:=''}.                  # URL of the ISO file
-: ${DEBUG:=''}.               # Enable debug mode
+: ${BOOT:=''}                   # URL of the ISO file
+: ${DEBUG:='N'}             # Enable debug mode
 : ${ALLOCATE:='Y'}       # Preallocate diskspace
 : ${CPU_CORES:='1'}     # Amount of CPU cores
 : ${DISK_SIZE:='16G'}    # Initial data disk size
@@ -13,6 +13,8 @@ set -eu
 echo "Starting QEMU for Docker v${VERSION}..."
 
 STORAGE="/storage"
+KERNEL=$(uname -r | cut -b 1)
+
 [ ! -d "$STORAGE" ] && echo "Storage folder (${STORAGE}) not found!" && exit 69
 [ ! -f "/run/run.sh" ] && echo "Script must run inside Docker container!" && exit 60
 
@@ -48,7 +50,14 @@ RAM_OPTS=$(echo "-m ${RAM_SIZE}" | sed 's/MB/M/g;s/GB/G/g;s/TB/T/g')
 CPU_OPTS="-smp ${CPU_CORES},sockets=1,cores=${CPU_CORES},threads=1"
 SERIAL_OPTS="-serial mon:stdio -device virtio-serial-pci,id=virtio-serial0,bus=pcie.0,addr=0x3"
 EXTRA_OPTS="-device virtio-balloon-pci,id=balloon0 -object rng-random,id=rng0,filename=/dev/urandom -device virtio-rng-pci,rng=rng0"
+
 ARGS="${DEF_OPTS} ${CPU_OPTS} ${RAM_OPTS} ${KVM_OPTS} ${MON_OPTS} ${SERIAL_OPTS} ${NET_OPTS} ${DISK_OPTS} ${EXTRA_OPTS}"
+ARGS=$(echo "$ARGS" | sed 's/\t/ /g' | tr -s ' ')
+
+if [ "$DEBUG" = "Y" ]; then
+  echo -n "qemu-system-x86_64 "
+  echo "${ARGS}" && echo
+fi
 
 set -m
 (
@@ -56,4 +65,8 @@ set -m
 )
 set +m
 
-pidwait -F "${_QEMU_PID}" & wait $!
+if (( KERNEL > 4 )); then
+  pidwait -F "${_QEMU_PID}" & wait $!
+else
+  tail --pid "$(cat ${_QEMU_PID})" --follow /dev/null & wait $!
+fi