diff --git a/blockchain/parity/ethpoller/mode/watchlist.pm b/blockchain/parity/ethpoller/mode/watchlist.pm
index 9ffb7fd85..78b577fee 100644
--- a/blockchain/parity/ethpoller/mode/watchlist.pm
+++ b/blockchain/parity/ethpoller/mode/watchlist.pm
@@ -24,6 +24,7 @@ use base qw(centreon::plugins::templates::counter);
 
 use strict;
 use warnings;
+use bigint;
 use Digest::MD5 qw(md5_hex);
 
 sub new {
diff --git a/blockchain/parity/restapi/mode/eth.pm b/blockchain/parity/restapi/mode/eth.pm
index 63f7f435b..6d7fbe78c 100644
--- a/blockchain/parity/restapi/mode/eth.pm
+++ b/blockchain/parity/restapi/mode/eth.pm
@@ -25,6 +25,7 @@ use base qw(centreon::plugins::templates::counter);
 use strict;
 use warnings;
 use Digest::MD5 qw(md5_hex);
+use bigint;
 use centreon::plugins::templates::catalog_functions qw(catalog_status_threshold catalog_status_calc);
 
 sub custom_status_output {