diff --git a/dap-sdk/crypto/src/salsa2012/crypto_stream_salsa2012.h b/dap-sdk/crypto/src/salsa2012/crypto_stream_salsa2012.h
index 9722d8d1fa0604a6be59e3735dd476290e67fcec..01694eb21e448e7c3af14fdc7db60ee21a6c9559 100644
--- a/dap-sdk/crypto/src/salsa2012/crypto_stream_salsa2012.h
+++ b/dap-sdk/crypto/src/salsa2012/crypto_stream_salsa2012.h
@@ -10,7 +10,6 @@
  */
 
 #include <stddef.h>
-#include <stddef.h>
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/dap-sdk/crypto/src/salsa2012/stream_salsa2012_ref.c b/dap-sdk/crypto/src/salsa2012/stream_salsa2012_ref.c
index 5937c63ba0fd80c95a24f5fc8abe11a60767b2d7..cc85f41a22c309c3f4333f34053fb95c027108a7 100644
--- a/dap-sdk/crypto/src/salsa2012/stream_salsa2012_ref.c
+++ b/dap-sdk/crypto/src/salsa2012/stream_salsa2012_ref.c
@@ -8,8 +8,6 @@ Public domain.
 
 #include "crypto_core_salsa2012.h"
 #include "crypto_stream_salsa2012.h"
-#include "utils.h"
-
 
 /**
  * @brief generate gamma bytes