diff --git a/TTPs/SANS/GCIH/504Book1.py b/TTPs/SANS/GCIH/504Book1.py
index 4514e79..ffd3004 100644
--- a/TTPs/SANS/GCIH/504Book1.py
+++ b/TTPs/SANS/GCIH/504Book1.py
@@ -1,6 +1,6 @@
 from Modules.Imports.ttp_imports import *
 
-def GCIH_Book_1_submenu():
+def gcih_book1_submenu():
     build_submenu("504 Book 1", module=globals())
 
 def picerl_overview():