diff --git a/src/crypto/tls_wolfssl.c b/src/crypto/tls_wolfssl.c
index b8a7665fd..ea8f7063b 100644
--- a/src/crypto/tls_wolfssl.c
+++ b/src/crypto/tls_wolfssl.c
@@ -469,7 +469,7 @@ static int tls_connection_client_cert(struct tls_connection *conn,
 	if (client_cert_blob) {
 		if (wolfSSL_use_certificate_chain_buffer_format(
 			    conn->ssl, client_cert_blob, blob_len,
-			    SSL_FILETYPE_ASN1) < 0) {
+			    SSL_FILETYPE_ASN1) != SSL_SUCCESS) {
 			wpa_printf(MSG_INFO,
 				   "SSL: use client cert DER blob failed");
 			return -1;
@@ -479,13 +479,13 @@ static int tls_connection_client_cert(struct tls_connection *conn,
 	}
 
 	if (client_cert) {
-		if (wolfSSL_use_certificate_chain_file(conn->ssl,
-						       client_cert) < 0) {
+		if (wolfSSL_use_certificate_chain_file(
+			    conn->ssl, client_cert) != SSL_SUCCESS) {
 			wpa_printf(MSG_INFO,
 				   "SSL: use client cert PEM file failed");
 			if (wolfSSL_use_certificate_chain_file_format(
 				    conn->ssl, client_cert,
-				    SSL_FILETYPE_ASN1) < 0) {
+				    SSL_FILETYPE_ASN1) != SSL_SUCCESS) {
 				wpa_printf(MSG_INFO,
 					   "SSL: use client cert DER file failed");
 				return -1;