diff --git a/fhem/FHEM/90_at.pm b/fhem/FHEM/90_at.pm
index 75c602c1e..930a6f772 100644
--- a/fhem/FHEM/90_at.pm
+++ b/fhem/FHEM/90_at.pm
@@ -4,7 +4,6 @@ package main;
 
 use strict;
 use warnings;
-use POSIX;
 use Time::HiRes qw(gettimeofday);
 
 #####################################