diff --git a/field_group.api.php b/field_group.api.php
index cef5b0a..fdcbe03 100644
--- a/field_group.api.php
+++ b/field_group.api.php
@@ -220,7 +220,7 @@ function hook_field_group_format_settings($group) {
  * @param Array $elements by address.
  * @param Object $group The Field group info.
  */
-function hook_field_group_pre_render(& $element, $group, & $form) {
+function hook_field_group_pre_render(&$element, $group, &$form) {
 
   // You can prepare some variables to use in the logic.
   $view_mode = isset($form['#view_mode']) ? $form['#view_mode'] : 'form';
@@ -268,7 +268,7 @@ function hook_field_group_pre_render(& $element, $group, & $form) {
  *
  * Function that fungates as last resort to alter the pre_render build.
  */
-function hook_field_group_pre_render_alter(&$element, $group, & $form) {
+function hook_field_group_pre_render_alter(&$element, $group, &$form) {
 
   if ($group->format_type == 'htab') {
     $element['#theme_wrappers'] = array('my_horizontal_tab');
@@ -285,7 +285,7 @@ function hook_field_group_pre_render_alter(&$element, $group, & $form) {
  *
  * @param Array $elements by address.
  */
-function hook_field_group_build_pre_render_alter(& $element) {
+function hook_field_group_build_pre_render_alter(&$element) {
 
   // Prepare variables.
   $display = isset($element['#view_mode']);
diff --git a/field_group.field_ui.inc b/field_group.field_ui.inc
index 8872e38..dbd26d0 100644
--- a/field_group.field_ui.inc
+++ b/field_group.field_ui.inc
@@ -99,10 +99,10 @@ function field_group_field_ui_overview_form_alter(&$form, &$form_state, $display
     // Play around with form_state so we only need to hold things
     // between requests, until the save button was hit.
     if (isset($form_state['field_group'][$name])) {
-      $group = & $form_state['field_group'][$name];
+      $group = &$form_state['field_group'][$name];

     }
     else {
-      $group = & $params->groups[$name];
+      $group = &$params->groups[$name];

     }
 
     // Check the currently selected formatter, and merge persisted values for
@@ -456,7 +456,7 @@ function field_group_format_settings_label_validate($element, &$form_state) {
  * @param Object $group
  * @param array $settings
  */
-function field_group_formatter_row_update(& $group, $settings) {
+function field_group_formatter_row_update(&$group, $settings) {

   // if the row has changed formatter type, update the group object
   if (!empty($settings['format']['type']) && $settings['format']['type'] != $group->format_type) {
     $group->format_type = $settings['format']['type'];
@@ -469,7 +469,7 @@ function field_group_formatter_row_update(& $group, $settings) {
  * @param Object $group The group object
  * @param Array $settings Configuration settings
  */
-function field_group_formatter_settings_update(& $group, $settings) {
+function field_group_formatter_settings_update(&$group, $settings) {

 
   // for format changes we load the defaults.
   if (empty($settings['format_settings']['settings'])) {
diff --git a/field_group.module b/field_group.module
index 412825f..8c43813 100644
--- a/field_group.module
+++ b/field_group.module
@@ -1110,7 +1110,7 @@ function field_group_pre_render_tab(&$element, $group, &$form) {
  * Implements hook_field_group_build_pre_render_alter().
  * @param Array $elements by address.
  */
-function field_group_field_group_build_pre_render_alter(& $element) {
+function field_group_field_group_build_pre_render_alter(&$element) {
 
   // Someone is doing a node view, in a node view. Reset content.
   // TODO Check if this breaks something else.