diff --git a/main/exercice/multiple_answer.class.php b/main/exercice/multiple_answer.class.php
index 2853885b58..ad795fbb23 100644
--- a/main/exercice/multiple_answer.class.php
+++ b/main/exercice/multiple_answer.class.php
@@ -147,8 +147,8 @@ class MultipleAnswer extends Question {
 		
 		$form -> add_multiple_required_rule ($boxes_names , get_lang('ChooseAtLeastOneCheckbox') , 'multiple_required');
 
-		$form->addElement('style_submit_button', 'lessAnswers', get_lang('LessAnswer'));
-		$form->addElement('style_submit_button', 'moreAnswers', get_lang('PlusAnswer'));
+		$form->addElement('style_submit_button', 'lessAnswers', get_lang('LessAnswer'),'class="save"');
+		$form->addElement('style_submit_button', 'moreAnswers', get_lang('PlusAnswer'),'class="save"');
 		$renderer->setElementTemplate('{element} ','lessAnswers');
 		$renderer->setElementTemplate('{element}','moreAnswers');
 		$form -> addElement ('html', '</div></div>');
diff --git a/main/exercice/unique_answer.class.php b/main/exercice/unique_answer.class.php
index ef0e6616c3..3e64d716b9 100644
--- a/main/exercice/unique_answer.class.php
+++ b/main/exercice/unique_answer.class.php
@@ -255,8 +255,8 @@ class UniqueAnswer extends Question {
 		$form -> addElement ('html', '</table>');
 		$form -> addElement ('html', '<br />');
 
-		$form->addElement('style_submit_button', 'lessAnswers', get_lang('LessAnswer'));
-		$form->addElement('style_submit_button', 'moreAnswers', get_lang('PlusAnswer'));
+		$form->addElement('style_submit_button', 'lessAnswers', get_lang('LessAnswer'),'class="save"');
+		$form->addElement('style_submit_button', 'moreAnswers', get_lang('PlusAnswer'),'class="save"');
 		
 		$renderer->setElementTemplate('{element}&nbsp;','lessAnswers');
 		$renderer->setElementTemplate('{element}','moreAnswers');