diff --git a/debian/patches/0001-mm-iface-don-t-reset-USB-ID-unless-quitting.patch b/debian/patches/0001-mm-iface-don-t-reset-USB-ID-unless-quitting.patch
new file mode 100644
index 0000000..9472f62
--- /dev/null
+++ b/debian/patches/0001-mm-iface-don-t-reset-USB-ID-unless-quitting.patch
@@ -0,0 +1,55 @@
+From 6ab5156dfacbf5d98f0c3c2e991cbe1cf85ca9e6 Mon Sep 17 00:00:00 2001
+From: Arnaud Ferraris <arnaud.ferraris@collabora.com>
+Date: Fri, 11 Dec 2020 14:31:20 +0100
+Subject: [PATCH] mm-iface: don't reset USB ID unless quitting
+
+As ModemManager releases the modem while going to sleep, we clear the
+USB ID too, which causes a segfault when trying to recover the modem.
+---
+ src/mm-iface.c | 15 +++++----------
+ 1 file changed, 5 insertions(+), 10 deletions(-)
+
+diff --git a/src/mm-iface.c b/src/mm-iface.c
+index f1021de..f6ec6eb 100644
+--- a/src/mm-iface.c
++++ b/src/mm-iface.c
+@@ -84,13 +84,8 @@ static void interface_removed_cb(struct EG25Manager *manager,
+ 
+     g_message("ModemManager interface `%s' removed on object `%s'", info->name, path);
+ 
+-    if (g_strcmp0(info->name, MM_DBUS_INTERFACE_MODEM) == 0) {
++    if (g_strcmp0(info->name, MM_DBUS_INTERFACE_MODEM) == 0)
+         manager->mm_modem = NULL;
+-        if (manager->modem_usb_id) {
+-            g_free(manager->modem_usb_id);
+-            manager->modem_usb_id = NULL;
+-        }
+-    }
+ }
+ 
+ 
+@@ -133,10 +128,6 @@ static void object_removed_cb(struct EG25Manager *manager, GDBusObject *object)
+     g_message("ModemManager object `%s' removed", path);
+ 
+     manager->mm_modem = NULL;
+-    if (manager->modem_usb_id) {
+-        g_free(manager->modem_usb_id);
+-        manager->modem_usb_id = NULL;
+-    }
+ }
+ 
+ 
+@@ -196,6 +187,10 @@ void mm_iface_destroy(struct EG25Manager *manager)
+         g_clear_object(&manager->mm_manager);
+         manager->mm_manager = NULL;
+     }
++    if (manager->modem_usb_id) {
++        g_free(manager->modem_usb_id);
++        manager->modem_usb_id = NULL;
++    }
+     if (manager->mm_watch != 0) {
+         g_bus_unwatch_name(manager->mm_watch);
+         manager->mm_watch = 0;
+-- 
+2.29.2
+
diff --git a/debian/patches/series b/debian/patches/series
new file mode 100644
index 0000000..ab851ee
--- /dev/null
+++ b/debian/patches/series
@@ -0,0 +1 @@
+0001-mm-iface-don-t-reset-USB-ID-unless-quitting.patch