diff --git a/install_update.py b/install_update.py
index 0795dbf..7b42210 100644
--- a/install_update.py
+++ b/install_update.py
@@ -20,7 +20,7 @@ def extractzip(progressbar): # Windows and Mac
         os.system("mv appbase AO2XP.app/Contents/Resources/base") # put it back in place
 
 def extractgz(progressbar): # Linux
-    archive = tarfile.open("update.tar.gz")
+    archive = tarfile.open("update.gz")
     archive.extractall()