diff --git a/Koha/REST/V1/Illrequests.pm b/Koha/REST/V1/Illrequests.pm
index 8746bf17f7..eb3a5cf28c 100644
--- a/Koha/REST/V1/Illrequests.pm
+++ b/Koha/REST/V1/Illrequests.pm
@@ -40,7 +40,6 @@ sub list {
     my $c = shift->openapi->valid_input or return;
 
     my $args = $c->req->params->to_hash // {};
-    my $filter;
     my $output = [];
     my @format_dates = ( 'placed', 'updated' );