diff --git a/main.c b/main.c
index fefafc3..682c769 100644
--- a/main.c
+++ b/main.c
@@ -79,7 +79,6 @@ u32 oam_update_count = 0;
 u32 synchronize_flag = 1;
 
 u32 update_backup_flag = 1;
-u32 clock_speed = 333;
 char main_path[512];
 
 void trigger_ext_event();
diff --git a/main.h b/main.h
index 543560e..41317a9 100644
--- a/main.h
+++ b/main.h
@@ -86,7 +86,6 @@ extern u64 base_timestamp;
 extern char main_path[512];
 
 extern u32 update_backup_flag;
-extern u32 clock_speed;
 
 u32 update_gba();
 void reset_gba();