diff --git a/src/wolfio.c b/src/wolfio.c
index 0ab1b8ac2..73b21df38 100644
--- a/src/wolfio.c
+++ b/src/wolfio.c
@@ -884,7 +884,11 @@ int wolfIO_TcpBind(SOCKET_T* sockfd, word16 port)
                    && !defined(WOLFSSL_KEIL_TCP_NET) && !defined(WOLFSSL_ZEPHYR)
     {
         int optval  = 1;
+#ifndef USE_WINDOWS_API
         socklen_t optlen = sizeof(optval);
+#else
+        int optlen = sizeof(optval);
+#endif
         if (setsockopt(*sockfd, SOL_SOCKET, SO_REUSEADDR, &optval, optlen) < 0) {
             WOLFSSL_MSG("setsockopt SO_REUSEADDR failed");
             CloseSocket(*sockfd);
@@ -917,7 +921,11 @@ int wolfIO_TcpBind(SOCKET_T* sockfd, word16 port)
 }
 
 #ifdef HAVE_SOCKADDR
+#ifndef USE_WINDOWS_API
 int wolfIO_TcpAccept(SOCKET_T sockfd, SOCKADDR* peer_addr, socklen_t* peer_len)
+#else
+int wolfIO_TcpAccept(SOCKET_T sockfd, SOCKADDR* peer_addr, int* peer_len)
+#endif
 {
     return accept(sockfd, peer_addr, peer_len);
 }
diff --git a/wolfssl/wolfio.h b/wolfssl/wolfio.h
index 9ab060d05..7e7355bfb 100644
--- a/wolfssl/wolfio.h
+++ b/wolfssl/wolfio.h
@@ -373,7 +373,11 @@
 #endif
 WOLFSSL_API  int wolfIO_TcpConnect(SOCKET_T* sockfd, const char* ip,
     unsigned short port, int to_sec);
+#ifndef USE_WINDOWS_API
 WOLFSSL_API int wolfIO_TcpAccept(SOCKET_T sockfd, SOCKADDR* peer_addr, socklen_t* peer_len);
+#else
+WOLFSSL_API int wolfIO_TcpAccept(SOCKET_T sockfd, SOCKADDR* peer_addr, int* peer_len);
+#endif
 WOLFSSL_API int wolfIO_TcpBind(SOCKET_T* sockfd, word16 port);
 WOLFSSL_API  int wolfIO_Send(SOCKET_T sd, char *buf, int sz, int wrFlags);
 WOLFSSL_API  int wolfIO_Recv(SOCKET_T sd, char *buf, int sz, int rdFlags);