diff --git a/crypto/fipsmodule/curve25519/curve25519.c b/crypto/fipsmodule/curve25519/curve25519.c
index a6ebc490ab9..3cc42da43a8 100644
--- a/crypto/fipsmodule/curve25519/curve25519.c
+++ b/crypto/fipsmodule/curve25519/curve25519.c
@@ -19,6 +19,7 @@
 
 #include "../../internal.h"
 #include "../cpucap/internal.h"
+#include "../service_indicator/internal.h"
 #include "internal.h"
 
 const uint8_t RFC8032_DOM2_PREFIX[DOM2_PREFIX_SIZE] = {