1 files changed, 1 insertions, 1 deletions
diff --git a/etc/sh/rc b/etc/sh/rc
index 872d879..c5007e6 100644
--- a/etc/sh/rc
+++ b/etc/sh/rc
@@ -386,7 +386,7 @@ fi
 # Only for graphical sessions
 #
 
-if [ -n "$DISPLAY" ]; then
+if [ -n "${DISPLAY:-}" ]; then
 	xset s 1800
 	xset r rate 225 100
 fi