diff --git a/src/pocketmine/plugin/PluginDescription.php b/src/pocketmine/plugin/PluginDescription.php
index 4cf9b99fb..69ca61c7f 100644
--- a/src/pocketmine/plugin/PluginDescription.php
+++ b/src/pocketmine/plugin/PluginDescription.php
@@ -66,8 +66,8 @@ class PluginDescription{
 	 * @throws PluginException
 	 */
 	private function loadMap(array $plugin){
-		$this->name = preg_replace("[^A-Za-z0-9 _.-]", "", $plugin["name"]);
-		if($this->name === ""){
+		$this->name = $plugin["name"];
+		if(preg_match('/^[A-Za-z0-9 _.-]+$/', $this->name) === 0){
 			throw new PluginException("Invalid PluginDescription name");
 		}
 		$this->name = str_replace(" ", "_", $this->name);