diff --git a/src/modules/displaymanager/main.py b/src/modules/displaymanager/main.py
index 3b2394b52..11b4c0b41 100644
--- a/src/modules/displaymanager/main.py
+++ b/src/modules/displaymanager/main.py
@@ -495,26 +495,21 @@ class DMlightdm(DisplayManager):
                 text = lightdm_conf.readlines()
                 # Check to make sure [SeatDefaults] or [Seat:*] is in the config,
                 # otherwise we'll risk malforming the config
-                if not '[SeatDefaults]' in text and not '[Seat:*]' in text:
-                    addseat = True
+                addseat = '[SeatDefaults]' not in text and '[Seat:*]' not in text
 
             with open(lightdm_conf_path, 'w') as lightdm_conf:
                 if addseat:
-                    # Append Seat line to start of file rather than leaving it without one
+                    # Prepend Seat line to start of file rather than leaving it without one
                     # This keeps the config from being malformed for LightDM
                     text = ["[Seat:*]\n"] + text
-                loopcount = 0
                 for line in text:
                     if 'autologin-user=' in line:
                         if do_autologin:
                             line = "autologin-user={!s}\n".format(username)
                         else:
                             line = "#autologin-user=\n"
-                        text[loopcount] = line
-                    loopcount += 1
 
-                lightdm_conf.write("".join(text))
-                loopcount = 0
+                    lightdm_conf.write(line)
         else:
             try:
                 # Create a new lightdm.conf file; this is documented to be