diff --git a/src/hw_ostc3.c b/src/hw_ostc3.c
index 00b40eb..c03e055 100644
--- a/src/hw_ostc3.c
+++ b/src/hw_ostc3.c
@@ -29,8 +29,6 @@
 #include "context-private.h"
 #include "device-private.h"
 #include "serial.h"
-#include "checksum.h"
-#include "ringbuffer.h"
 #include "array.h"
 #include "aes.h"