diff --git src/wp-admin/includes/template.php src/wp-admin/includes/template.php
index 03ff4e7..bcb1ec5 100644
--- src/wp-admin/includes/template.php
+++ src/wp-admin/includes/template.php
@@ -882,10 +882,12 @@ function wp_dropdown_roles( $selected = '' ) {
 
 	foreach ( $editable_roles as $role => $details ) {
 		$name = translate_user_role($details['name'] );
-		if ( $selected == $role ) // preselect specified role
+		// preselect specified role
+		if ( $selected === $role ) {
 			$p = "\n\t<option selected='selected' value='" . esc_attr($role) . "'>$name</option>";
-		else
+		} else {
 			$r .= "\n\t<option value='" . esc_attr($role) . "'>$name</option>";
+		}
 	}
 	echo $p . $r;
 }