diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index 6f0023548b9..1a15abe53bc 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -8408,8 +8408,13 @@ class Form
 			}
 		}
 
-		// Try also magic suggest
-		$out .= '<select id="'.$htmlname.'" class="multiselect'.($morecss ? ' '.$morecss : '').'" multiple name="'.$htmlname.'[]"'.($moreattrib ? ' '.$moreattrib : '').($width ? ' style="width: '.(preg_match('/%/', $width) ? $width : $width.'px').'"' : '').'>'."\n";
+		$useenhancedmultiselect = 0;
+		if (!empty($conf->use_javascript_ajax) && !empty($conf->global->MAIN_USE_JQUERY_MULTISELECT) || defined('REQUIRE_JQUERY_MULTISELECT')) {
+			$useenhancedmultiselect = 1;
+		}
+
+		// Output select component
+		$out .= '<select id="'.$htmlname.'" class="multiselect'.($useenhancedmultiselect ? ' multiselectononeline' : '').($morecss ? ' '.$morecss : '').'" multiple name="'.$htmlname.'[]"'.($moreattrib ? ' '.$moreattrib : '').($width ? ' style="width: '.(preg_match('/%/', $width) ? $width : $width.'px').'"' : '').'>'."\n";
 		if (is_array($array) && !empty($array)) {
 			if ($value_as_key) {
 				$array = array_combine($array, $array);
diff --git a/htdocs/theme/eldy/global.inc.php b/htdocs/theme/eldy/global.inc.php
index 8f7d4b1ef1e..12d068168d0 100644
--- a/htdocs/theme/eldy/global.inc.php
+++ b/htdocs/theme/eldy/global.inc.php
@@ -6514,6 +6514,14 @@ ul.select2-results__options li {
 	font-size: 0.95em;
 }
 
+select.multiselectononeline {
+	padding: 0;
+	vertical-align: middle;
+	height: 28px !important;
+	opacity: 0;
+	/* width: 1px !important; */
+}
+
 @media only screen and (min-width: 767px)
 {
 	/* CSS to have the dropdown boxes larger that the input search area */
diff --git a/htdocs/theme/md/style.css.php b/htdocs/theme/md/style.css.php
index 6d56e452898..20349be0b4e 100644
--- a/htdocs/theme/md/style.css.php
+++ b/htdocs/theme/md/style.css.php
@@ -6421,6 +6421,14 @@ ul.select2-results__options li {
 	font-size: 0.95em;
 }
 
+select.multiselectononeline {
+	padding: 0;
+	vertical-align: middle;
+	height: 28px !important;
+	opacity: 0;
+	/* width: 1px !important; */
+}
+
 @media only screen and (min-width: 767px)
 {
 	/* CSS to have the dropdown boxes larger that the input search area */