diff --git a/Koha/REST/Plugin/Query.pm b/Koha/REST/Plugin/Query.pm
index d25d9e58a5..e058bf9515 100644
--- a/Koha/REST/Plugin/Query.pm
+++ b/Koha/REST/Plugin/Query.pm
@@ -511,7 +511,8 @@ sub _parse_dbic_query {
 
 sub _validate_operator {
     my ($operator) = @_;
-    my %allowed_operators = map { $_ => 1 } qw(= != < > <= >= like -not_like -in -ident -bool -not_bool -or);
+    my %allowed_operators =
+        map { $_ => 1 } qw(= != < > <= >= like -not_like -in -ident -bool -not_bool -or -like -not -and -regexp);
     Koha::Exceptions::REST::Query::InvalidOperator->throw( operator => $operator )
         unless exists $allowed_operators{$operator};
     return;