diff --git a/lib/NGCP/Panel/Role/API.pm b/lib/NGCP/Panel/Role/API.pm
index f73a46d55c..2b0af26979 100644
--- a/lib/NGCP/Panel/Role/API.pm
+++ b/lib/NGCP/Panel/Role/API.pm
@@ -1114,7 +1114,7 @@ sub apply_query_params {
             $item_rs = $param->{new_rs}($c,$q,$item_rs);
         } elsif (defined $param->{query} || defined $param->{query_type}) {
             #regular chaining:
-            my($sub_where,$sub_attributes) = $self->get_query_callbacks($p);
+            my($sub_where,$sub_attributes) = $self->get_query_callbacks($param);
             $item_rs = $item_rs->search($sub_where->($q,$c), $sub_attributes->($q,$c));
         }
     }
@@ -1159,22 +1159,22 @@ sub get_query_callbacks {
     my ($self, $param) = @_;
     my($sub_where,$sub_attributes);
     if ($param->{query_type}){
-        my $param = $param->{param};
-        if ($param !~ /\./) {
-            $param = 'me.' . $param;
+        my $p = $param->{param};
+        if ($p !~ /\./) {
+            $p = 'me.' . $p;
         }
         
         if ('string_like' eq $param->{query_type}) {
-            $sub_where = sub {my ($q, $c) = @_; $q =~ s/\*/\%/g; { $param => { like => $q } }; };
+            $sub_where = sub {my ($q, $c) = @_; $q =~ s/\*/\%/g; { $p => { like => $q } }; };
         } elsif ('string_eq' eq $param->{query_type}) {
-            $sub_where = sub {my ($q, $c) = @_; { $param => $q };};
+            $sub_where = sub {my ($q, $c) = @_; { $p => $q };};
         } elsif ('wildcard' eq $param->{query_type}) {
             $sub_where = sub {my ($q, $c) = @_; { wildcard_search(
                 search_string => $q,
                 search        => 1,
                 exact_search  => 0,
                 int_search    => 0,
-                col_name      => $param,
+                col_name      => $p,
             ) };};
         } elsif ('wildcard_optional' eq $param->{query_type}) {
             $sub_where = sub {my ($q, $c) = @_; { wildcard_search(
@@ -1182,7 +1182,7 @@ sub get_query_callbacks {
                 search        => 1,
                 exact_search  => check_wildcard_search($c->req->params),
                 int_search    => 0,
-                col_name      => $param,
+                col_name      => $p,
             ) };};
         }