diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index 4b25d23b882..ea8663cab31 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -602,7 +602,9 @@ class Form
 		$ret.=$hookmanager->resPrint;
 
 		$ret.='</select>';
-		$ret.=ajax_combobox('.massactionselect');
+
+		if (empty($conf->dol_optimize_smallscreen)) $ret.=ajax_combobox('.massactionselect');
+
 		// Warning: if you set submit button to disabled, post using 'Enter' will no more work if there is no another input submit. So we add a hidden button
 		$ret.='<input type="submit" name="confirmmassactioninvisible" style="display: none" tabindex="-1">';	// Hidden button BEFORE so it is the one used when we submit with ENTER.
 		$ret.='<input type="submit" disabled name="confirmmassaction" class="button'.(empty($conf->use_javascript_ajax)?'':' hideobject').' massaction massactionconfirmed" value="'.dol_escape_htmltag($langs->trans("Confirm")).'">';
diff --git a/htdocs/theme/eldy/global.inc.php b/htdocs/theme/eldy/global.inc.php
index 1951d8edab0..d2f3c2f075e 100644
--- a/htdocs/theme/eldy/global.inc.php
+++ b/htdocs/theme/eldy/global.inc.php
@@ -91,6 +91,9 @@ input, select {
 	margin-bottom:1px;
 	margin-top:1px;
 }
+input.button.massactionconfirmed {
+    margin: 4px;
+}
 
 /* Focus definitions must be after standard definition */
 textarea:focus {
diff --git a/htdocs/theme/md/style.css.php b/htdocs/theme/md/style.css.php
index 68c83f968c5..d7f0974da21 100644
--- a/htdocs/theme/md/style.css.php
+++ b/htdocs/theme/md/style.css.php
@@ -323,7 +323,9 @@ input, select {
 	margin-bottom:1px;
 	margin-top:1px;
 }
-
+input.button.massactionconfirmed {
+    margin: 4px;
+}
 
 textarea {
 	border-radius: 0;