diff --git a/mozilla-1522780.patch b/mozilla-1522780.patch
new file mode 100644
index 0000000..9b771b0
--- /dev/null
+++ b/mozilla-1522780.patch
@@ -0,0 +1,25 @@
+diff --git a/toolkit/xre/nsAppRunner.cpp b/toolkit/xre/nsAppRunner.cpp
+--- a/toolkit/xre/nsAppRunner.cpp
++++ b/toolkit/xre/nsAppRunner.cpp
+@@ -3622,12 +3622,15 @@
+ 
+     bool disableWayland = true;
+ #  if defined(MOZ_WAYLAND)
+-    // Make X11 backend the default one.
+-    // Enable Wayland backend only when GDK_BACKEND is set and
+-    // Gtk+ >= 3.22 where we can expect recent enough
++    // Enable Wayland on Gtk+ >= 3.22 where we can expect recent enough
+     // compositor & libwayland interface.
+-    disableWayland = (PR_GetEnv("GDK_BACKEND") == nullptr) ||
+-                     (gtk_check_version(3, 22, 0) != nullptr);
++    disableWayland = (gtk_check_version(3, 22, 0) != nullptr);
++    if (!disableWayland) {
++      // Make X11 backend the default one unless MOZ_ENABLE_WAYLAND or
++      // GDK_BACKEND are specified.
++      disableWayland = (PR_GetEnv("GDK_BACKEND") == nullptr) &&
++                       (PR_GetEnv("MOZ_ENABLE_WAYLAND") == nullptr);
++    }
+ #  endif
+     // On Wayland disabled builds read X11 DISPLAY env exclusively
+     // and don't care about different displays.
+