diff --git a/modemmanager/files/25-modemmanager-net b/modemmanager/files/25-modemmanager-net
index aad9852df..504c3d6b6 100644
--- a/modemmanager/files/25-modemmanager-net
+++ b/modemmanager/files/25-modemmanager-net
@@ -9,7 +9,8 @@
 [ -n "${INTERFACE}" ] || exit
 
 [ -n "$(echo ${INTERFACE} | grep -i sqm)" ] && exit
-[ ! -f /sys${DEVPATH} ] && exit
+[ -d /sys${DEVPATH} ] || exit
+[ -n "$(echo ${DEVPATH} | grep -i sqm)" ] && exit
 
 # Always make sure the rundir exists
 mkdir -m 0755 -p "${MODEMMANAGER_RUNDIR}"
diff --git a/modemmanager/files/25-modemmanager-tty b/modemmanager/files/25-modemmanager-tty
index c13148a33..1d3fb9a35 100644
--- a/modemmanager/files/25-modemmanager-tty
+++ b/modemmanager/files/25-modemmanager-tty
@@ -7,6 +7,8 @@
 
 # We require a device name
 [ -n "$DEVNAME" ] || exit
+[ -d /sys${DEVPATH} ] || exit
+[ -n "$(echo ${DEVPATH} | grep -i sqm)" ] && exit
 
 # Always make sure the rundir exists
 mkdir -m 0755 -p "${MODEMMANAGER_RUNDIR}"
diff --git a/modemmanager/files/25-modemmanager-usb b/modemmanager/files/25-modemmanager-usb
index 93d0bf70a..565b7b9c9 100644
--- a/modemmanager/files/25-modemmanager-usb
+++ b/modemmanager/files/25-modemmanager-usb
@@ -5,6 +5,8 @@
 # want to process specific interface removal events.
 [ "$ACTION" = remove ] || exit
 [ -z "${INTERFACE}" ] || exit
+[ -d /sys${DEVPATH} ] || exit
+[ -n "$(echo ${DEVPATH} | grep -i sqm)" ] && exit
 
 # Load common utilities
 . /usr/share/ModemManager/modemmanager.common