diff --git a/src/libsodium/crypto_stream/aes128ctr/portable/int128_aes128ctr.c b/src/libsodium/crypto_stream/aes128ctr/portable/int128_aes128ctr.c
index d350b9b4..703de39b 100644
--- a/src/libsodium/crypto_stream/aes128ctr/portable/int128_aes128ctr.c
+++ b/src/libsodium/crypto_stream/aes128ctr/portable/int128_aes128ctr.c
@@ -1,6 +1,4 @@
 
-#include <string.h>
-
 #include "int128.h"
 #include "common.h"