diff --git a/src/libsodium/Makefile.am b/src/libsodium/Makefile.am
index 2b613fdc..aa2d2982 100644
--- a/src/libsodium/Makefile.am
+++ b/src/libsodium/Makefile.am
@@ -68,8 +68,8 @@ libsodium_la_SOURCES = \
 	crypto_sign/edwards25519sha512batch/ref/sc25519.h \
 	crypto_sign/edwards25519sha512batch/ref/sc25519_edwards25519sha512batch.c \
 	crypto_sign/edwards25519sha512batch/ref/sign_edwards25519sha512batch.c \
+	crypto_secretbox/xsalsa20poly1305/ref/api.h \
 	crypto_secretbox/xsalsa20poly1305/ref/box_xsalsa20poly1305.c \
-	crypto_secretbox/xsalsa20poly1305/ref/crypto_secretbox.h \
 	crypto_box/curve25519xsalsa20poly1305/ref/api.h \
 	crypto_box/curve25519xsalsa20poly1305/ref/after_curve25519xsalsa20poly1305.c \
 	crypto_box/curve25519xsalsa20poly1305/ref/before_curve25519xsalsa20poly1305.c \
diff --git a/src/libsodium/crypto_secretbox/xsalsa20poly1305/ref/crypto_secretbox.h b/src/libsodium/crypto_secretbox/xsalsa20poly1305/ref/api.h
similarity index 100%
rename from src/libsodium/crypto_secretbox/xsalsa20poly1305/ref/crypto_secretbox.h
rename to src/libsodium/crypto_secretbox/xsalsa20poly1305/ref/api.h
diff --git a/src/libsodium/crypto_secretbox/xsalsa20poly1305/ref/box_xsalsa20poly1305.c b/src/libsodium/crypto_secretbox/xsalsa20poly1305/ref/box_xsalsa20poly1305.c
index f1abb06f..f68334ef 100644
--- a/src/libsodium/crypto_secretbox/xsalsa20poly1305/ref/box_xsalsa20poly1305.c
+++ b/src/libsodium/crypto_secretbox/xsalsa20poly1305/ref/box_xsalsa20poly1305.c
@@ -1,6 +1,6 @@
+#include "api.h"
 #include "crypto_onetimeauth_poly1305.h"
 #include "crypto_stream_xsalsa20.h"
-#include "crypto_secretbox.h"
 
 int crypto_secretbox(
   unsigned char *c,