diff --git a/platform/src/ssl_stream.cpp b/platform/src/ssl_stream.cpp
index 2ee5e55..67bd24d 100644
--- a/platform/src/ssl_stream.cpp
+++ b/platform/src/ssl_stream.cpp
@@ -796,7 +796,8 @@ static SSL * upstream_ssl_create(struct ssl_mgr * mgr, const struct ssl_chello *
 	}
 	if (chello->alpn)
 	{
-		SSL_set_alpn_protos(ssl, chello->alpn, strlen(chello->alpn));
+		ret=SSL_set_alpn_protos(ssl, (unsigned char*)chello->alpn, strlen(chello->alpn));
+		assert(0);
 	}
 	/* lower memory footprint for idle connections */
 	SSL_set_mode(ssl, SSL_get_mode(ssl) | SSL_MODE_RELEASE_BUFFERS);
diff --git a/platform/src/ssl_utils.cc b/platform/src/ssl_utils.cc
index 11fa6bf..5a7deb8 100644
--- a/platform/src/ssl_utils.cc
+++ b/platform/src/ssl_utils.cc
@@ -1840,8 +1840,8 @@ static char* parse_alpn_extension(const unsigned char* buff, size_t buff_len, en
 		*result = CHELLO_PARSE_INVALID_FORMAT;
 		return NULL;
 	}
-	char* alpn = (char*)malloc(len + 1);
-	strncpy(alpn, (const char*)buff + 2, len);
+	char* alpn = ALLOC(char, len + 1);
+	strncpy((char*)alpn, (const char*)buff + 2, len);
 	alpn[len] = '\0';
 	*result = CHELLO_PARSE_SUCCESS;
 	return alpn;
diff --git a/platform/test/test_chello_parse.cpp b/platform/test/test_chello_parse.cpp
index 56fdb8d..7a45add 100644
--- a/platform/test/test_chello_parse.cpp
+++ b/platform/test/test_chello_parse.cpp
@@ -147,7 +147,7 @@ int main()
 	printf("cipher suites:  %s\n", chello2->cipher_suites);
 	printf("cipher suites for tls1.3:  %s\n", chello2->cipher_suites_tls13);
 	printf("sni:  %s\n", chello2->sni);
-	char* alpn = parse_alpn(chello2->alpn);
+	char* alpn = parse_alpn((char*)chello2->alpn);
 	printf("alpn:  %s\n", alpn);
 	free(alpn);
 	alpn = NULL;