--- src/xfpm-dpms.c.orig	2019-05-17 13:43:56 UTC
+++ src/xfpm-dpms.c
@@ -119,13 +119,13 @@ xfpm_dpms_get_enabled (XfpmDpms *dpms, gboolean *dpms_
 static void
 xfpm_dpms_get_sleep_mode (XfpmDpms *dpms, gboolean *ret_standby_mode)
 {
-    gchar *sleep_mode;
+    gchar *sleep_mode = NULL;
 
     g_object_get (G_OBJECT (dpms->priv->conf),
 		  DPMS_SLEEP_MODE, &sleep_mode,
 		  NULL);
 
-    if ( !g_strcmp0 (sleep_mode, "Standby"))
+    if ( sleep_mode != NULL && !g_strcmp0 (sleep_mode, "Standby"))
 	*ret_standby_mode = TRUE;
     else
 	*ret_standby_mode = FALSE;