Index: src/dunst.c
--- src/dunst.c.orig
+++ src/dunst.c
@@ -100,7 +100,7 @@ static gboolean run(void *data)
                 gint64 sleep = timeout_at - now;
                 sleep = MAX(sleep, 1000); // Sleep at least 1ms
 
-                LOG_D("Sleeping for %li ms", sleep/1000);
+                LOG_D("Sleeping for %lli ms", (long long)sleep/1000);
 
                 if (sleep >= 0) {
                         if (reason == 0 || next_timeout < now || timeout_at < next_timeout) {