diff --git a/earth_wallpaper.sh b/earth_wallpaper.sh
index fba14fa..52b3f3e 100755
--- a/earth_wallpaper.sh
+++ b/earth_wallpaper.sh
@@ -101,6 +101,7 @@ if [ -z ${curl_cmd} ]; then
 	exit 3
 fi
 
+export DISPLAY=:0.0
 if [[ -z ${city} ]]; then
 	echo "You must indicate a city to center the image."
 	exit 4