diff --git a/src/pocketmine/plugin/PluginBase.php b/src/pocketmine/plugin/PluginBase.php
index 19f3f70a7..5295b71c8 100644
--- a/src/pocketmine/plugin/PluginBase.php
+++ b/src/pocketmine/plugin/PluginBase.php
@@ -202,16 +202,17 @@ abstract class PluginBase implements Plugin{
 
 		$out = $this->dataFolder . $filename;
 		if(!file_exists($this->dataFolder)){
-			if(!file_exists($this->dataFolder)){
-				mkdir($this->dataFolder, 0755, true);
-			}
+			mkdir($this->dataFolder, 0755, true);
 		}
 
 		if(file_exists($out) and $replace !== true){
 			return false;
 		}
 
-		return stream_copy_to_stream($resource, fopen($out, "wb")) > 0;
+		$ret = stream_copy_to_stream($resource, $fp = fopen($out, "wb")) > 0;
+		fclose($fp);
+		fclose($resource);
+		return $ret;
 	}
 
 	/**
@@ -257,6 +258,7 @@ abstract class PluginBase implements Plugin{
 		$this->config = new Config($this->configFile);
 		if(($configStream = $this->getResource("config.yml")) !== null){
 			$this->config->setDefaults(yaml_parse(config::fixYAMLIndexes(stream_get_contents($configStream))));
+			fclose($configStream);
 		}
 	}
 
diff --git a/src/pocketmine/utils/Utils.php b/src/pocketmine/utils/Utils.php
index 635342870..2499e1820 100644
--- a/src/pocketmine/utils/Utils.php
+++ b/src/pocketmine/utils/Utils.php
@@ -272,9 +272,18 @@ class Utils{
 			unset($weakEntropy);
 
 			if($secure === true){
+
+				if(file_exists("/dev/urandom")){
+					$fp = fopen("/dev/urandom", "rb");
+					$systemRandom = fread($fp, 64);
+					fclose($fp);
+				}else{
+					$systemRandom = str_repeat("\x00", 64);
+				}
+
 				$strongEntropyValues = [
 					is_array($startEntropy) ? hash("sha512", $startEntropy[($rounds + $drop) % count($startEntropy)], true) : hash("sha512", $startEntropy, true), //Get a random index of the startEntropy, or just read it
-					file_exists("/dev/urandom") ? fread(fopen("/dev/urandom", "rb"), 64) : str_repeat("\x00", 64),
+					$systemRandom,
 					function_exists("openssl_random_pseudo_bytes") ? openssl_random_pseudo_bytes(64) : str_repeat("\x00", 64),
 					function_exists("mcrypt_create_iv") ? mcrypt_create_iv(64, MCRYPT_DEV_URANDOM) : str_repeat("\x00", 64),
 					$value,