diff --git a/system/hostname.py b/system/hostname.py
index 95b28dbf69d..48311f07a96 100644
--- a/system/hostname.py
+++ b/system/hostname.py
@@ -313,7 +313,7 @@ class OpenRCStrategy(GenericStrategy):
     def set_permanent_hostname(self, name):
         try:
             f = open(self.HOSTNAME_FILE, 'r')
-            lines = (x.strip() for x in f)
+            lines = [x.strip() for x in f]
 
             for i, line in enumerate(lines):
                 if line.startswith('hostname='):