diff --git a/mywob b/mywob
index 2fc262d..a562343 100755
--- a/mywob
+++ b/mywob
@@ -1,6 +1,7 @@
 #!/bin/sh
 
 if [ "$1" ]; then
+    #string:x-canonical-private-synchronous:anything makes notification replace previous one
     notify-send -a "mywob" " " -i I -h int:value:"$1" -h string:synchronous:volume -h string:x-canonical-private-synchronous:anything -t 1000
 
 fi