diff --git a/contrib/HMCCU/88_HMCCUCHN.pm b/contrib/HMCCU/88_HMCCUCHN.pm
index 44585993f..980d3544f 100644
--- a/contrib/HMCCU/88_HMCCUCHN.pm
+++ b/contrib/HMCCU/88_HMCCUCHN.pm
@@ -40,7 +40,7 @@ use strict;
 use warnings;
 use SetExtensions;
 
-use Time::HiRes qw( usleep );
+use Time::HiRes qw( gettimeofday usleep );
 
 sub HMCCUCHN_Define ($@);
 sub HMCCUCHN_Set ($@);