diff --git a/fhem/contrib/HMCCU/88_HMCCUCHN.pm b/fhem/contrib/HMCCU/88_HMCCUCHN.pm
index 75c045dbe..44585993f 100644
--- a/fhem/contrib/HMCCU/88_HMCCUCHN.pm
+++ b/fhem/contrib/HMCCU/88_HMCCUCHN.pm
@@ -40,7 +40,7 @@ use strict;
 use warnings;
 use SetExtensions;
 
-use Time::HiRes;
+use Time::HiRes qw( usleep );
 
 sub HMCCUCHN_Define ($@);
 sub HMCCUCHN_Set ($@);