diff --git a/userpatches/overlay/etc/systemd/system/usbc_port_cat.service b/userpatches/overlay/etc/systemd/system/usbc_port_cat.service
index cbf1035..da77f6d 100644
--- a/userpatches/overlay/etc/systemd/system/usbc_port_cat.service
+++ b/userpatches/overlay/etc/systemd/system/usbc_port_cat.service
@@ -2,6 +2,7 @@
 Description=USB-C Port RAW CAT control
 Requires=x6100_socat_cat.service
 Requires=x6100_cat_mux.service
+Requires=x6100_app.service
 
 [Service]
 User=root
diff --git a/userpatches/overlay/etc/systemd/system/x6100_socat_cat.service b/userpatches/overlay/etc/systemd/system/x6100_socat_cat.service
index df5fe8e..e8810d0 100644
--- a/userpatches/overlay/etc/systemd/system/x6100_socat_cat.service
+++ b/userpatches/overlay/etc/systemd/system/x6100_socat_cat.service
@@ -4,6 +4,7 @@ Requires=x6100_chroot.service
 
 [Service]
 User=root
+Type=notify
 ExecStart=/root/run_x6100_socat_app.sh start
 ExecStop=/root/run_x6100_socat_app.sh stop
 Restart=on-failure
diff --git a/userpatches/overlay/root/run_x6100_socat_app.sh b/userpatches/overlay/root/run_x6100_socat_app.sh
index 3ea058f..22ef175 100755
--- a/userpatches/overlay/root/run_x6100_socat_app.sh
+++ b/userpatches/overlay/root/run_x6100_socat_app.sh
@@ -18,6 +18,9 @@ if [ "$ACTION" == "start" ] ; then
     if [ -e "${CAT_DEV_NEW}" ] ; then
         rm ${CAT_DEV_NEW}
     fi
+    if [ -e "${CAT_DEV_ORG}" ] ; then
+        rm ${CAT_DEV_ORG}
+    fi
 
     if [ ! -e "${CAT_DEV_ORG}" ] ; then
         # create orginal
@@ -25,6 +28,7 @@ if [ "$ACTION" == "start" ] ; then
         chown root:dialout ${CAT_DEV_ORG}
     fi
 
+    systemd-notify --ready --status="starting socat"
     exec socat pty,link=${CAT_DEV_NEW},raw,user=root,group=dialout,echo=0 tcp-listen:9990,bind=127.0.0.1,fork
 else
     if [ -e "${CAT_DEV_ORG}" ] ; then
@@ -43,5 +47,4 @@ else
     # restore orginal
     mknod -m 660 ${CAT_DEV} c 4 66
     chown root:dialout ${CAT_DEV}
-
 fi