diff --git a/modules/taxonomy.module b/modules/taxonomy.module
index 819194da4d0f..0b20db1e49f1 100644
--- a/modules/taxonomy.module
+++ b/modules/taxonomy.module
@@ -855,44 +855,45 @@ function taxonomy_term_page($str_tids = '', $depth = 0, $op = 'page') {
     drupal_not_found();
   }
 
-  // Build title:
-  $result = db_query('SELECT name FROM {term_data} WHERE tid IN (%s)', implode(',', $tids));
-  $names = array();
-  while ($term = db_fetch_object($result)) {
-    $names[] = $term->name;
-  }
-  $title = implode(', ', $names);
+  if ($tids) {
+    // Build title:
+    $result = db_query('SELECT name FROM {term_data} WHERE tid IN (%s)', implode(',', $tids));
+    $names = array();
+    while ($term = db_fetch_object($result)) {
+      $names[] = $term->name;
+    }
+    $title = implode(', ', $names);
 
-  switch ($op) {
-    case 'page':
-      // Build breadcrumb based on first hierarchy of first term:
-      $current->tid = $tids[0];
-      $breadcrumbs = array(array('path' => $_GET['q']));
-      while ($parents = taxonomy_get_parents($current->tid)) {
-        $current = array_shift($parents);
-        $breadcrumbs[] = array('path' => 'taxonomy/term/'. $current->tid, 'title' => $current->name);
-      }
-      $breadcrumbs = array_reverse($breadcrumbs);
-      menu_set_location($breadcrumbs);
+    switch ($op) {
+      case 'page':
+        // Build breadcrumb based on first hierarchy of first term:
+        $current->tid = $tids[0];
+        $breadcrumbs = array(array('path' => $_GET['q']));
+        while ($parents = taxonomy_get_parents($current->tid)) {
+          $current = array_shift($parents);
+          $breadcrumbs[] = array('path' => 'taxonomy/term/'. $current->tid, 'title' => $current->name);
+        }
+        $breadcrumbs = array_reverse($breadcrumbs);
+        menu_set_location($breadcrumbs);
 
-      drupal_set_html_head('<link rel="alternate" type="application/rss+xml" title="RSS - '. $title .'" href="'. url('taxonomy/term/'. $str_tids .'/'. $depth .'/feed') .'" />');
+        drupal_set_html_head('<link rel="alternate" type="application/rss+xml" title="RSS - '. $title .'" href="'. url('taxonomy/term/'. $str_tids .'/'. $depth .'/feed') .'" />');
 
-      $output = taxonomy_render_nodes(taxonomy_select_nodes($tids, $operator, $depth, TRUE));
-      print theme('page', $output, $title);
-      break;
+        $output = taxonomy_render_nodes(taxonomy_select_nodes($tids, $operator, $depth, TRUE));
+        print theme('page', $output, $title);
+        break;
 
-    case 'feed':
-      $term = taxonomy_get_term($tids[0]);
-      $channel['link'] = url('taxonomy/term/'. $str_tids .'/'. $depth, NULL, NULL, TRUE);
-      $channel['title'] = variable_get('site_name', 'drupal') .' - '. $title;
-      $channel['description'] = $term->description;
+      case 'feed':
+        $term = taxonomy_get_term($tids[0]);
+        $channel['link'] = url('taxonomy/term/'. $str_tids .'/'. $depth, NULL, NULL, TRUE);
+        $channel['title'] = variable_get('site_name', 'drupal') .' - '. $title;
+        $channel['description'] = $term->description;
 
-      $result = taxonomy_select_nodes($tids, $operator, $depth, FALSE);
-      node_feed($result, $channel);
-      break;
-
-    default:
-      drupal_not_found();
+        $result = taxonomy_select_nodes($tids, $operator, $depth, FALSE);
+        node_feed($result, $channel);
+        break;
+      default:
+        drupal_not_found();
+    }
   }
 }
 
diff --git a/modules/taxonomy/taxonomy.module b/modules/taxonomy/taxonomy.module
index 819194da4d0f..0b20db1e49f1 100644
--- a/modules/taxonomy/taxonomy.module
+++ b/modules/taxonomy/taxonomy.module
@@ -855,44 +855,45 @@ function taxonomy_term_page($str_tids = '', $depth = 0, $op = 'page') {
     drupal_not_found();
   }
 
-  // Build title:
-  $result = db_query('SELECT name FROM {term_data} WHERE tid IN (%s)', implode(',', $tids));
-  $names = array();
-  while ($term = db_fetch_object($result)) {
-    $names[] = $term->name;
-  }
-  $title = implode(', ', $names);
+  if ($tids) {
+    // Build title:
+    $result = db_query('SELECT name FROM {term_data} WHERE tid IN (%s)', implode(',', $tids));
+    $names = array();
+    while ($term = db_fetch_object($result)) {
+      $names[] = $term->name;
+    }
+    $title = implode(', ', $names);
 
-  switch ($op) {
-    case 'page':
-      // Build breadcrumb based on first hierarchy of first term:
-      $current->tid = $tids[0];
-      $breadcrumbs = array(array('path' => $_GET['q']));
-      while ($parents = taxonomy_get_parents($current->tid)) {
-        $current = array_shift($parents);
-        $breadcrumbs[] = array('path' => 'taxonomy/term/'. $current->tid, 'title' => $current->name);
-      }
-      $breadcrumbs = array_reverse($breadcrumbs);
-      menu_set_location($breadcrumbs);
+    switch ($op) {
+      case 'page':
+        // Build breadcrumb based on first hierarchy of first term:
+        $current->tid = $tids[0];
+        $breadcrumbs = array(array('path' => $_GET['q']));
+        while ($parents = taxonomy_get_parents($current->tid)) {
+          $current = array_shift($parents);
+          $breadcrumbs[] = array('path' => 'taxonomy/term/'. $current->tid, 'title' => $current->name);
+        }
+        $breadcrumbs = array_reverse($breadcrumbs);
+        menu_set_location($breadcrumbs);
 
-      drupal_set_html_head('<link rel="alternate" type="application/rss+xml" title="RSS - '. $title .'" href="'. url('taxonomy/term/'. $str_tids .'/'. $depth .'/feed') .'" />');
+        drupal_set_html_head('<link rel="alternate" type="application/rss+xml" title="RSS - '. $title .'" href="'. url('taxonomy/term/'. $str_tids .'/'. $depth .'/feed') .'" />');
 
-      $output = taxonomy_render_nodes(taxonomy_select_nodes($tids, $operator, $depth, TRUE));
-      print theme('page', $output, $title);
-      break;
+        $output = taxonomy_render_nodes(taxonomy_select_nodes($tids, $operator, $depth, TRUE));
+        print theme('page', $output, $title);
+        break;
 
-    case 'feed':
-      $term = taxonomy_get_term($tids[0]);
-      $channel['link'] = url('taxonomy/term/'. $str_tids .'/'. $depth, NULL, NULL, TRUE);
-      $channel['title'] = variable_get('site_name', 'drupal') .' - '. $title;
-      $channel['description'] = $term->description;
+      case 'feed':
+        $term = taxonomy_get_term($tids[0]);
+        $channel['link'] = url('taxonomy/term/'. $str_tids .'/'. $depth, NULL, NULL, TRUE);
+        $channel['title'] = variable_get('site_name', 'drupal') .' - '. $title;
+        $channel['description'] = $term->description;
 
-      $result = taxonomy_select_nodes($tids, $operator, $depth, FALSE);
-      node_feed($result, $channel);
-      break;
-
-    default:
-      drupal_not_found();
+        $result = taxonomy_select_nodes($tids, $operator, $depth, FALSE);
+        node_feed($result, $channel);
+        break;
+      default:
+        drupal_not_found();
+    }
   }
 }