Untitled-5

 src/backends/meta-monitor-manager.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/backends/meta-monitor-manager.c b/src/backends/meta-monitor-manager.c
index 829c189..198f755 100644
--- a/src/backends/meta-monitor-manager.c
+++ b/src/backends/meta-monitor-manager.c
@@ -190,6 +190,9 @@ calculate_monitor_scale (MetaMonitorManager *manager,
   MetaMonitorMode *monitor_mode;

   monitor_mode = meta_monitor_get_current_mode (monitor);
+  if (!monitor_mode)
+    return 1.0;
+
   return meta_monitor_manager_calculate_monitor_mode_scale (manager,
                                                             monitor,
                                                             monitor_mode);