diff --git a/src/libsodium/crypto_scalarmult/curve25519/donna_c64/base_curve25519_donna_c64.c b/src/libsodium/crypto_scalarmult/curve25519/donna_c64/base_curve25519_donna_c64.c
index 40d0d2f8..58a3f1c9 100644
--- a/src/libsodium/crypto_scalarmult/curve25519/donna_c64/base_curve25519_donna_c64.c
+++ b/src/libsodium/crypto_scalarmult/curve25519/donna_c64/base_curve25519_donna_c64.c
@@ -1,7 +1,7 @@
 
 #include "api.h"
 
-#ifdef HAVE_MODE_TI
+#ifdef HAVE_TI_MODE
 
 static const unsigned char basepoint[32] = {9};
 
diff --git a/src/libsodium/crypto_scalarmult/curve25519/donna_c64/smult_curve25519_donna_c64.c b/src/libsodium/crypto_scalarmult/curve25519/donna_c64/smult_curve25519_donna_c64.c
index bf2fb670..4a6f0247 100644
--- a/src/libsodium/crypto_scalarmult/curve25519/donna_c64/smult_curve25519_donna_c64.c
+++ b/src/libsodium/crypto_scalarmult/curve25519/donna_c64/smult_curve25519_donna_c64.c
@@ -26,7 +26,7 @@
 #include <stdint.h>
 #include "api.h"
 
-#ifdef HAVE_MODE_TI
+#ifdef HAVE_TI_MODE
 
 typedef uint8_t u8;
 typedef uint64_t limb;