diff --git a/include/crypto/mldsa.h b/include/crypto/mldsa.h
index e0754879e745..b156f166a141 100644
--- a/include/crypto/mldsa.h
+++ b/include/crypto/mldsa.h
@@ -52,8 +52,9 @@ enum mldsa_alg {
  * * -EKEYREJECTED if the signature is invalid but otherwise well-formed
  * * -ENOMEM if out of memory so the validity of the signature is unknown
  */
-int mldsa_verify(enum mldsa_alg alg, const u8 *sig, size_t sig_len,
-		 const u8 *msg, size_t msg_len, const u8 *pk, size_t pk_len);
+int __must_check mldsa_verify(enum mldsa_alg alg, const u8 *sig, size_t sig_len,
+			      const u8 *msg, size_t msg_len, const u8 *pk,
+			      size_t pk_len);
 
 #if IS_ENABLED(CONFIG_CRYPTO_LIB_MLDSA_KUNIT_TEST)
 /* Internal function, exposed only for unit testing */