diff --git a/plugins/PluginDownloader/plugin.py b/plugins/PluginDownloader/plugin.py
index 225bc55c2..778b206a1 100644
--- a/plugins/PluginDownloader/plugin.py
+++ b/plugins/PluginDownloader/plugin.py
@@ -138,7 +138,7 @@ class GithubRepository(GitRepository):
                     if extractedFile is None:
                         os.mkdir(newFileName)
                     else:
-                        open(newFileName, 'a').write(extractedFile.read())
+                        open(newFileName, 'ab').write(extractedFile.read())
         finally:
             archive.close()
             del archive