diff -Nru libqmi-1.18.0/debian/changelog libqmi-1.18.0/debian/changelog
--- libqmi-1.18.0/debian/changelog	2017-06-17 03:46:52.000000000 -0700
+++ libqmi-1.18.0/debian/changelog	2017-06-22 15:19:49.000000000 -0700
@@ -1,3 +1,10 @@
+libqmi (1.18.0-1ubuntu1) artful; urgency=medium
+
+  * d/patches/fix-g-file-test-null-assertion.diff: Fix FTBFS
+    due to null assertion on g_file_test (LP: #4901192).
+
+ -- Tiago Stürmer Daitx <tiago.daitx@ubuntu.com>  Thu, 22 Jun 2017 15:19:49 -0700
+
 libqmi (1.18.0-1) unstable; urgency=medium
 
   * New upstream version 1.18.0
diff -Nru libqmi-1.18.0/debian/control libqmi-1.18.0/debian/control
--- libqmi-1.18.0/debian/control	2017-06-17 03:46:52.000000000 -0700
+++ libqmi-1.18.0/debian/control	2017-06-22 15:19:49.000000000 -0700
@@ -1,6 +1,7 @@
 Source: libqmi
 Priority: optional
-Maintainer: Marius B. Kotsbak <marius@kotsbak.com>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Marius B. Kotsbak <marius@kotsbak.com>
 Uploaders: Michael Biebl <biebl@debian.org>,
 Build-Depends: debhelper (>= 10),
                gtk-doc-tools,
diff -Nru libqmi-1.18.0/debian/patches/fix-g-file-test-null-assertion.diff libqmi-1.18.0/debian/patches/fix-g-file-test-null-assertion.diff
--- libqmi-1.18.0/debian/patches/fix-g-file-test-null-assertion.diff	1969-12-31 16:00:00.000000000 -0800
+++ libqmi-1.18.0/debian/patches/fix-g-file-test-null-assertion.diff	2017-06-22 14:06:55.000000000 -0700
@@ -0,0 +1,34 @@
+Description: utils: drop useless g_file_test() call
+ canonicalize_file_name() returns NULL if file doesn't
+ exist, so no need to check file existence with
+ g_file_test().
+
+ Without this patch calls to this function (as in the
+ test-generated tests) will fail on glib2.0 v2.53+ 
+ due to a NULL check introduced in g_file_test. The
+ NULL check introduction was tracked at:
+ https://bugzilla.gnome.org/show_bug.cgi?id=755046
+Author: Mikhail Efremov <sem@altlinux.org>
+Origin: https://cgit.freedesktop.org/libqmi/commit/src/libqmi-glib/qmi-utils.c?id=07da0340043b3b4d3ffc005e0a10b4776157a0fe
+Bug-Debian: https://bugs.debian.org/865579
+Bug-Ubuntu: https://launchpad.net/bugs/1699599
+Forwarded: not-needed
+Applied-Upstream: 07da0340043b3b4d3ffc005e0a10b4776157a0fe
+Last-Update: 2017-06-22
+---
+This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
+--- a/src/libqmi-glib/qmi-utils.c
++++ b/src/libqmi-glib/qmi-utils.c
+@@ -743,8 +743,10 @@ __qmi_utils_get_driver (const gchar *cdc
+         path = canonicalize_file_name (tmp);
+         g_free (tmp);
+ 
+-        if (g_file_test (path, G_FILE_TEST_EXISTS))
+-            driver = g_path_get_basename (path);
++        if (!path)
++            continue;
++
++        driver = g_path_get_basename (path);
+         g_free (path);
+     }
+ 
diff -Nru libqmi-1.18.0/debian/patches/series libqmi-1.18.0/debian/patches/series
--- libqmi-1.18.0/debian/patches/series	1969-12-31 16:00:00.000000000 -0800
+++ libqmi-1.18.0/debian/patches/series	2017-06-22 13:21:18.000000000 -0700
@@ -0,0 +1 @@
+fix-g-file-test-null-assertion.diff