diff --git a/Cart_Reader/options.h b/Cart_Reader/options.h
index 36daa8f..36ea8a3 100644
--- a/Cart_Reader/options.h
+++ b/Cart_Reader/options.h
@@ -42,3 +42,7 @@
 
 // saves a n64log.txt file with rom info in /N64/ROM
 #define savesummarytotxt
+
+// Setup RTC if installed.
+// remove // if you have an RTC installed
+// #define RTC_installed