diff --git a/t/openssl.c b/t/openssl.c
index ea6ffa2..121ac3e 100644
--- a/t/openssl.c
+++ b/t/openssl.c
@@ -140,7 +140,7 @@
     ptls_buffer_init(&sigbuf, sigbuf_small, sizeof(sigbuf_small));
     ok(do_sign(sc->key, &sigbuf, ptls_iovec_init(message, strlen(message)), EVP_sha256()) == 0);
     EVP_PKEY_up_ref(sc->key);
-    ok(verify_sign(sc->key, ptls_iovec_init(message, strlen(message)), ptls_iovec_init(sigbuf.base, sigbuf.off), EVP_sha256()) == 0);
+    ok(verify_sign(sc->key, ptls_iovec_init(message, strlen(message)), ptls_iovec_init(sigbuf.base, sigbuf.off)) == 0);
 
     ptls_buffer_dispose(&sigbuf);
 }
@@ -164,7 +164,7 @@
     ptls_buffer_init(&sigbuf, sigbuf_small, sizeof(sigbuf_small));
     ok(do_sign(pkey, &sigbuf, ptls_iovec_init(message, strlen(message)), EVP_sha256()) == 0);
     EVP_PKEY_up_ref(pkey);
-    ok(verify_sign(pkey, ptls_iovec_init(message, strlen(message)), ptls_iovec_init(sigbuf.base, sigbuf.off), EVP_sha256()) == 0);
+    ok(verify_sign(pkey, ptls_iovec_init(message, strlen(message)), ptls_iovec_init(sigbuf.base, sigbuf.off)) == 0);
 
     ptls_buffer_dispose(&sigbuf);
     EVP_PKEY_free(pkey);
@@ -190,7 +190,7 @@
     ptls_buffer_init(&sigbuf, sigbuf_small, sizeof(sigbuf_small));
     ok(do_sign(pkey, &sigbuf, ptls_iovec_init(message, strlen(message)), NULL) == 0);
     EVP_PKEY_up_ref(pkey);
-    ok(verify_sign(pkey, ptls_iovec_init(message, strlen(message)), ptls_iovec_init(sigbuf.base, sigbuf.off), NULL) == 0);
+    ok(verify_sign(pkey, ptls_iovec_init(message, strlen(message)), ptls_iovec_init(sigbuf.base, sigbuf.off)) == 0);
 
     ptls_buffer_dispose(&sigbuf);
     EVP_PKEY_free(pkey);