diff --git a/Koha/Account/Line.pm b/Koha/Account/Line.pm
index 9cf8867bce..3573e604e6 100644
--- a/Koha/Account/Line.pm
+++ b/Koha/Account/Line.pm
@@ -190,7 +190,7 @@ sub apply {
             Koha::Account::Offset->new(
                 {   credit_id => $self->id,
                     debit_id  => $debit->id,
-                    amount    => $amount_to_cancel,
+                    amount    => $amount_to_cancel * -1,
                     type      => $offset_type,
                 }
             )->store();
diff --git a/t/db_dependent/Koha/Account/Lines.t b/t/db_dependent/Koha/Account/Lines.t
index 20033e70b6..eb8dfdd1c0 100755
--- a/t/db_dependent/Koha/Account/Lines.t
+++ b/t/db_dependent/Koha/Account/Lines.t
@@ -202,7 +202,7 @@ subtest 'apply() tests' => sub {
     my $offsets = Koha::Account::Offsets->search( { credit_id => $credit->id, debit_id => $debit_1->id } );
     is( $offsets->count, 1, 'Only one offset is generated' );
     my $THE_offset = $offsets->next;
-    is( $THE_offset->amount * 1, 10, 'Amount was calculated correctly (less than the available credit)' );
+    is( $THE_offset->amount * 1, -10, 'Amount was calculated correctly (less than the available credit)' );
     is( $THE_offset->type, 'Manual Credit', 'Passed type stored correctly' );
 
     $debits = Koha::Account::Lines->search({ accountlines_id => $debit_2->id });
@@ -216,7 +216,7 @@ subtest 'apply() tests' => sub {
     $offsets = Koha::Account::Offsets->search( { credit_id => $credit->id, debit_id => $debit_2->id } );
     is( $offsets->count, 1, 'Only one offset is generated' );
     $THE_offset = $offsets->next;
-    is( $THE_offset->amount * 1, 90, 'Amount was calculated correctly (less than the available credit)' );
+    is( $THE_offset->amount * 1, -90, 'Amount was calculated correctly (less than the available credit)' );
     is( $THE_offset->type, 'Credit Applied', 'Defaults to \'Credit Applied\' offset type' );
 
     $debits = Koha::Account::Lines->search({ accountlines_id => $debit_1->id });