diff --git a/lib/Tools/Aria2.php b/lib/Tools/Aria2.php
index 1218c70..2801a9d 100644
--- a/lib/Tools/Aria2.php
+++ b/lib/Tools/Aria2.php
@@ -43,6 +43,9 @@ class Aria2
         } else {
             $this->bin = Helper::findBinaryPath('aria2c', __DIR__ . "/../../bin/aria2c");
         }
+        if ($this->isInstalled() && !$this->isExecutable()) {
+            chmod($this->bin, 755);
+        }
         $this->setDownloadDir($dir);
         $this->setTorrentsDir($torrents_dir);
         if (!empty($settings)) {
diff --git a/lib/Tools/Youtube.php b/lib/Tools/Youtube.php
index eb517c1..174968f 100644
--- a/lib/Tools/Youtube.php
+++ b/lib/Tools/Youtube.php
@@ -33,6 +33,9 @@ class Youtube
         } else {
             $this->bin = Helper::findBinaryPath('youtube-dl', __DIR__ . "/../../bin/youtube-dl");
         }
+        if ($this->isInstalled() && !$this->isExecutable()) {
+            chmod($this->bin, 755);
+        }
         $this->setDownloadDir($downloadDir);
         if (!empty($settings)) {
             foreach ($settings as $key => $value) {