diff --git a/img.sh b/img.sh
index 420b2de..4ed7352 100755
--- a/img.sh
+++ b/img.sh
@@ -3,7 +3,7 @@
 # Call with '-s' to target only a selection of the screen.
 
 clientid='3e7a4deb7ac67da'
-img=$(date '+/tmp/%N.png')
+img=$(mktemp '/tmp/img-XXXXXX.png')
 
 scrot -z "$@" $img >/dev/null 2>&1 || exit
 res=$(curl -sH "Authorization: Client-ID $clientid" -F "image=@$img" "https://api.imgur.com/3/upload")