diff --git a/Bugzilla/Search.pm b/Bugzilla/Search.pm
index c77df8f06..64a539b03 100644
--- a/Bugzilla/Search.pm
+++ b/Bugzilla/Search.pm
@@ -3289,8 +3289,18 @@ sub _in_search_results
     }
     else
     {
-        $self->{term}->{where} = "$self->{fieldsql} = $t.bug_id";
-        $self->{term}->{notnull_field} = "$t.bug_id";
+        my $f = Bugzilla->get_field($self->{field});
+        if ($f && ($f->type == FIELD_TYPE_BUG_ID || $f->type == FIELD_TYPE_BUG_ID_REV) ||
+            $self->{field} eq 'blocked' || $self->{field} eq 'dependson' || $self->{field} eq 'dup_id')
+        {
+            $self->{term}->{where} = "$self->{fieldsql} = $t.bug_id";
+            $self->{term}->{notnull_field} = "$t.bug_id";
+            $self->{term}->{supp} = [ @{$self->{supptables}} ];
+        }
+        else
+        {
+            ThrowUserError('in_search_needs_bugid_field', { field => $self->{field} });
+        }
     }
 }
 
diff --git a/template/en/default/global/user-error.html.tmpl b/template/en/default/global/user-error.html.tmpl
index 595203611..fd36c7aa2 100644
--- a/template/en/default/global/user-error.html.tmpl
+++ b/template/en/default/global/user-error.html.tmpl
@@ -532,6 +532,11 @@
   Can't use [% field FILTER html %] as a field name.
 [% END %]
 
+[% BLOCK error_in_search_needs_bugid_field %]
+  Subquery search operator ("In Search Results") can only be applied to fields of type "Bug ID".
+  "[% field | html %]" is not a Bug ID field.
+[% END %]
+
 [% BLOCK error_useless_customfield_type %]
   [% title = "Can't create field of a useless type" %]
   It is impossible to create "[% lc_messages.field_types.$type %]" fields,