diff --git a/clementine-disable-systray-gnome.patch b/clementine-disable-systray-gnome.patch
index f4df470..9362a60 100644
--- a/clementine-disable-systray-gnome.patch
+++ b/clementine-disable-systray-gnome.patch
@@ -1,6 +1,6 @@
 diff -rupN Clementine-1.3.1.org/src/ui/mainwindow.cpp Clementine-1.3.1/src/ui/mainwindow.cpp
 --- Clementine-1.3.1.org/src/ui/mainwindow.cpp	2016-04-19 11:08:35.000000000 -0400
-+++ Clementine-1.3.1/src/ui/mainwindow.cpp	2018-09-29 22:56:44.128578136 -0400
++++ Clementine-1.3.1/src/ui/mainwindow.cpp	2018-10-17 21:53:40.168962770 -0400
 @@ -1023,7 +1023,13 @@ MainWindow::~MainWindow() {
  
  void MainWindow::ReloadSettings() {
@@ -9,7 +9,7 @@ diff -rupN Clementine-1.3.1.org/src/ui/mainwindow.cpp Clementine-1.3.1/src/ui/ma
 +  // Fedora patch. Disable systray on Gnome as it prevents Clementine from starting
 +  bool show_tray;
 +  const char* xdg_desktop = std::getenv("XDG_CURRENT_DESKTOP");
-+  if (std::string(xdg_desktop).find(std::string("GNOME")) != std::string::npos)
++  if (xdg_desktop && std::string(xdg_desktop).find(std::string("GNOME")) != std::string::npos)
 +    show_tray = false;
 +  else
 +    show_tray= settings_.value("showtray", true).toBool();
diff --git a/clementine.spec b/clementine.spec
index 610764e..52d9fcd 100644
--- a/clementine.spec
+++ b/clementine.spec
@@ -2,7 +2,7 @@
 
 Name:           clementine
 Version:        1.3.1
-Release:        28%{?dist}
+Release:        29%{?dist}
 Summary:        A music player and library organizer
 
 Group:          Applications/Multimedia
@@ -174,6 +174,9 @@ popd
 %{_datadir}/kde4/services/clementine-zune.protocol
 
 %changelog
+* Thu Oct 18 2018 Orcan Ogetbil <oget [DOT] fedora [AT] gmail [DOT] com> 1.3.1-29
+- Fix a crash on a system that doesn't define XDG_CURRENT_DESKTOP. RHBZ#1639901
+
 * Sat Sep 29 2018 Orcan Ogetbil <oget [DOT] fedora [AT] gmail [DOT] com> 1.3.1-28
 - Disable systray on Gnome. RHBZ#1517748