1 files changed, 2 insertions, 2 deletions
diff --git a/publish b/publish
index 32c8078..3186df6 100755
--- a/publish
+++ b/publish
@@ -280,9 +280,9 @@ if [ "$add_default_cs" -gt 0 ] ; then
 	shift
 fi
 
-if command -v xclip >/dev/null 2>&1 && [ $DISPLAY ]; then
+if command -v xclip >/dev/null 2>&1 && [ -n "${DISPLAY:-}" ]; then
 	echo -n "$main_uri" | xclip
-elif command -v xsel >/dev/null 2>&1 && [ $DISPLAY ]; then
+elif command -v xsel >/dev/null 2>&1 && [ -n "${DISPLAY:-}" ]; then
 	echo -n "$main_uri" | xsel
 fi