diff --git a/fhem/contrib/HMCCU/88_HMCCUDEV.pm b/fhem/contrib/HMCCU/88_HMCCUDEV.pm
index 911908974..7e43e8ed6 100644
--- a/fhem/contrib/HMCCU/88_HMCCUDEV.pm
+++ b/fhem/contrib/HMCCU/88_HMCCUDEV.pm
@@ -43,7 +43,7 @@ use warnings;
 use SetExtensions;
 # use Data::Dumper;
 
-use Time::HiRes qw( usleep );
+use Time::HiRes qw( gettimeofday usleep );
 
 sub HMCCUDEV_Define ($@);
 sub HMCCUDEV_Set ($@);