diff --git a/src/libsodium/crypto_stream/salsa20/ref/stream_salsa20_ref.c b/src/libsodium/crypto_stream/salsa20/ref/stream_salsa20_ref.c
index b9844ae2..3e4f6eb0 100644
--- a/src/libsodium/crypto_stream/salsa20/ref/stream_salsa20_ref.c
+++ b/src/libsodium/crypto_stream/salsa20/ref/stream_salsa20_ref.c
@@ -5,6 +5,7 @@ Public domain.
 */
 
 #include "crypto_core_salsa20.h"
+#include "crypto_stream_salsa20.h"
 #include "utils.h"
 
 #ifndef HAVE_AMD64_ASM
diff --git a/src/libsodium/crypto_stream/salsa20/ref/xor_salsa20_ref.c b/src/libsodium/crypto_stream/salsa20/ref/xor_salsa20_ref.c
index 3133e66d..b998ae4c 100644
--- a/src/libsodium/crypto_stream/salsa20/ref/xor_salsa20_ref.c
+++ b/src/libsodium/crypto_stream/salsa20/ref/xor_salsa20_ref.c
@@ -7,6 +7,7 @@ Public domain.
 #include <stdint.h>
 
 #include "crypto_core_salsa20.h"
+#include "crypto_stream_salsa20.h"
 #include "utils.h"
 
 #ifndef HAVE_AMD64_ASM
diff --git a/src/libsodium/crypto_stream/salsa2012/ref/stream_salsa2012.c b/src/libsodium/crypto_stream/salsa2012/ref/stream_salsa2012.c
index 38492012..5008ab69 100644
--- a/src/libsodium/crypto_stream/salsa2012/ref/stream_salsa2012.c
+++ b/src/libsodium/crypto_stream/salsa2012/ref/stream_salsa2012.c
@@ -5,6 +5,7 @@ Public domain.
 */
 
 #include "crypto_core_salsa2012.h"
+#include "crypto_stream_salsa2012.h"
 #include "utils.h"
 
 typedef unsigned int uint32;
diff --git a/src/libsodium/crypto_stream/salsa2012/ref/xor_salsa2012.c b/src/libsodium/crypto_stream/salsa2012/ref/xor_salsa2012.c
index 951dc70f..ab471b33 100644
--- a/src/libsodium/crypto_stream/salsa2012/ref/xor_salsa2012.c
+++ b/src/libsodium/crypto_stream/salsa2012/ref/xor_salsa2012.c
@@ -5,6 +5,7 @@ Public domain.
 */
 
 #include "crypto_core_salsa2012.h"
+#include "crypto_stream_salsa2012.h"
 #include "utils.h"
 
 typedef unsigned int uint32;
diff --git a/src/libsodium/crypto_stream/salsa208/ref/stream_salsa208.c b/src/libsodium/crypto_stream/salsa208/ref/stream_salsa208.c
index fe036a1c..7869b846 100644
--- a/src/libsodium/crypto_stream/salsa208/ref/stream_salsa208.c
+++ b/src/libsodium/crypto_stream/salsa208/ref/stream_salsa208.c
@@ -5,6 +5,7 @@ Public domain.
 */
 
 #include "crypto_core_salsa208.h"
+#include "crypto_stream_salsa208.h"
 #include "utils.h"
 
 typedef unsigned int uint32;
diff --git a/src/libsodium/crypto_stream/salsa208/ref/xor_salsa208.c b/src/libsodium/crypto_stream/salsa208/ref/xor_salsa208.c
index bdc9052c..706970f0 100644
--- a/src/libsodium/crypto_stream/salsa208/ref/xor_salsa208.c
+++ b/src/libsodium/crypto_stream/salsa208/ref/xor_salsa208.c
@@ -5,6 +5,7 @@ Public domain.
 */
 
 #include "crypto_core_salsa208.h"
+#include "crypto_stream_salsa208.h"
 #include "utils.h"
 
 typedef unsigned int uint32;