diff --git a/nton/main.py b/nton/main.py
index 9611f9a..a98ca59 100644
--- a/nton/main.py
+++ b/nton/main.py
@@ -11,7 +11,7 @@ from pathlib import Path
 
 import click as click
 
-from nton import __version__, nstool, system_title_ids
+from nton import __version__, nstool, title_ids
 from nton.constants import Directories, Binaries, Files
 
 
@@ -93,14 +93,14 @@ def build(
             log.error(f"The Title ID \"{id_}\" is an invalid hex string. It must be a-fA-f0-9.")
             return 1
         id_ = id_.lower()
-        if id_ in system_title_ids.ALL_SYSTEM:
+        if id_ in title_ids.ALL_SYSTEM:
             log.critical(f"The Title ID \"{id_}\" is a reserved System Title! Using it is unsafe!")
             return 2
-        if id_ in system_title_ids.game_title_ids:
-            log.warning(f"The Title ID \"{id_}\" is already used by \"{system_title_ids.game_title_ids[id_]}\".")
+        if id_ in title_ids.game_title_ids:
+            log.warning(f"The Title ID \"{id_}\" is already used by \"{title_ids.game_title_ids[id_]}\".")
     else:
         id_ = "0100000000000000"
-        while id_ in system_title_ids.ALL:
+        while id_ in title_ids.ALL:
             id_ = "01%s000" % os.urandom(6).hex()[:-1]
 
     if rom:
diff --git a/nton/system_title_ids.py b/nton/title_ids.py
similarity index 100%
rename from nton/system_title_ids.py
rename to nton/title_ids.py