diff --git a/include/crypto/curve25519.h b/include/crypto/curve25519.h
index 4e6dc840b1592c..ece6a9b5fafc88 100644
--- a/include/crypto/curve25519.h
+++ b/include/crypto/curve25519.h
@@ -28,6 +28,8 @@ void curve25519_arch(u8 out[CURVE25519_KEY_SIZE],
 void curve25519_base_arch(u8 pub[CURVE25519_KEY_SIZE],
 			  const u8 secret[CURVE25519_KEY_SIZE]);
 
+bool curve25519_selftest(void);
+
 static inline
 bool __must_check curve25519(u8 mypublic[CURVE25519_KEY_SIZE],
 			     const u8 secret[CURVE25519_KEY_SIZE],
diff --git a/lib/crypto/curve25519.c b/lib/crypto/curve25519.c
index 288a62cd29b22a..fb29739e8c2902 100644
--- a/lib/crypto/curve25519.c
+++ b/lib/crypto/curve25519.c
@@ -13,8 +13,6 @@
 #include <linux/module.h>
 #include <linux/init.h>
 
-bool curve25519_selftest(void);
-
 static int __init mod_init(void)
 {
 	if (!IS_ENABLED(CONFIG_CRYPTO_MANAGER_DISABLE_TESTS) &&