diff --git a/views_bonus.module b/views_bonus.module
index 0ddc131f921e2fc99bd1cc8af47e52ea5c3219cb..90b3934e0b9bf1c37815a75b1d23c38f6ee0813b 100644
--- a/views_bonus.module
+++ b/views_bonus.module
@@ -11,7 +11,7 @@ function views_bonus_help($section = NULL) {
  */
 function views_bonus_views_style_plugins() {
   $items = array();
-  if (module_exist('panels')) {
+  if (module_exists('panels')) {
     $items['panels_twocol_stk'] = array(
       'name' => t('Panels: Teasers, 1 top + 2 columns'),
       'theme' => 'views_bonus_panels_twocol_stacked',
@@ -45,7 +45,7 @@ function views_bonus_views_style_plugins() {
     'theme' => 'views_bonus_summary_combo',
     'summary_theme' => 'views_bonus_summary_combo_summary',
   );
-  if (module_exist('lineage') && module_exist('taxonomy')) {
+  if (module_exists('lineage') && module_exists('taxonomy')) {
     $items['lineage_tree'] = array(
       'name' => t('Lineage: Nested taxonomy summary'),
       'theme' => 'views_bonus_lineage_tree',
@@ -65,7 +65,7 @@ function views_bonus_views_style_plugins() {
 function theme_views_bonus_panels_twocol_stacked($view, $nodes, $type) {
   $teasers = true;
   $links = true;
-  if (!module_exist('panels')) {
+  if (!module_exists('panels')) {
     return theme('views_view_nodes', $view, $nodes, $type, $teasers, $links);
   }
   $content = array();
@@ -90,7 +90,7 @@ function theme_views_bonus_panels_twocol_stacked($view, $nodes, $type) {
 function theme_views_bonus_panels_twocol($view, $nodes, $type) {
   $teasers = true;
   $links = true;
-  if (!module_exist('panels')) {
+  if (!module_exists('panels')) {
     return theme('views_view_nodes', $view, $nodes, $type, $teasers, $links);
   }
   $content = array();
@@ -112,7 +112,7 @@ function theme_views_bonus_panels_twocol($view, $nodes, $type) {
 function theme_views_bonus_panels_threecol_stacked($view, $nodes, $type) {
   $teasers = true;
   $links = true;
-  if (!module_exist('panels')) {
+  if (!module_exists('panels')) {
     return theme('views_view_nodes', $view, $nodes, $type, $teasers, $links);
   }
   $content = array();
@@ -142,7 +142,7 @@ function theme_views_bonus_panels_threecol_stacked($view, $nodes, $type) {
 function theme_views_bonus_panels_threecol($view, $nodes, $type) {
   $teasers = true;
   $links = true;
-  if (!module_exist('panels')) {
+  if (!module_exists('panels')) {
     return theme('views_view_nodes', $view, $nodes, $type, $teasers, $links);
   }
   $content = array();
@@ -239,7 +239,7 @@ function theme_views_bonus_lineage_tree($view, $nodes, $type) {
 function theme_views_bonus_lineage_tree_summary($view, $type, $level, $nodes, $args) {
   
   // if lineage info is missing or this summary has no tid, bail out to normal summary view
-  if (!module_exist('lineage') || !module_exist('taxonomy') || !array_key_exists('tid', $nodes[0])) {
+  if (!module_exists('lineage') || !module_exists('taxonomy') || !array_key_exists('tid', $nodes[0])) {
     return theme('views_summary', $view, $type, $level, $nodes, $args);
   }
   
@@ -296,7 +296,7 @@ function theme_views_bonus_lineage_tree_summary($view, $type, $level, $nodes, $a
  */
 function views_bonus_lineage_tree_branch_arg($op, &$query, $argtype, $arg = '') {
   
-  if (!module_exist('lineage') || !module_exist('taxonomy')) {
+  if (!module_exists('lineage') || !module_exists('taxonomy')) {
     return;
   }
   switch($op) {
@@ -329,7 +329,7 @@ function views_bonus_lineage_tree_branch_arg($op, &$query, $argtype, $arg = '')
 // may be needed by other plugins
 function views_bonus_views_query_alter(&$query, &$view, $summary, $level) {
   
-  if ($view->page_type == 'lineage_tree' && module_exist('lineage') && module_exist('taxonomy')) {
+  if ($view->page_type == 'lineage_tree' && module_exists('lineage') && module_exists('taxonomy')) {
     
     // these must be in taxonomy tree query for it to work correctly
     if (!in_array('term_lineage.depth', $query->fields)) {
@@ -349,7 +349,7 @@ function views_bonus_views_query_alter(&$query, &$view, $summary, $level) {
 function views_bonus_views_arguments() {
   
   $arguments = array();
-  if (module_exist('lineage') && module_exist('taxonomy')) {
+  if (module_exists('lineage') && module_exists('taxonomy')) {
     $arguments = array(
     'lineage_branch' => array(
       'name' => t('Lineage: Term Branch'),
@@ -365,7 +365,7 @@ function views_bonus_views_arguments() {
 // may be needed by other plugins
 function views_bonus_views_default_views() {
     
-  if (module_exist('taxonomy')) {
+  if (module_exists('taxonomy')) {
     // this view takes advantage of the summary_combo plugin
     $view = new stdClass();
     $view->name = 'taxonomy_directory';
@@ -449,7 +449,7 @@ function views_bonus_views_default_views() {
     $view->requires = array(term_data, node);
     $views[$view->name] = $view;
   }
-  if (module_exist('lineage') && module_exist('taxonomy')) {
+  if (module_exists('lineage') && module_exists('taxonomy')) {
     // this default view provides an example of the lineage tree plugin summary view
     $view = new stdClass();
     $view->name = 'taxonomy_tree';