diff --git a/src/debug.hh b/src/debug.hh
index 990275f..fe06b21 100644
--- a/src/debug.hh
+++ b/src/debug.hh
@@ -50,7 +50,7 @@ static inline void win_get_last_error(void)
 
 #define debug(level, fmt, ...) \
 	fprintf(stderr, "[RTPLIB][%s][%s::%s] " fmt "\n", level, \
-            className(__PRETTY_FUNCTION__), __func__, ##__VA_ARGS__)
+            "", __func__, ##__VA_ARGS__)
 
 #ifndef NDEBUG
 #define LOG_DEBUG(fmt,  ...) debug(LOG_LEVEL_DEBUG,  fmt, ##__VA_ARGS__)
diff --git a/src/formats/hevc.cc b/src/formats/hevc.cc
index 50e9949..560cbd1 100644
--- a/src/formats/hevc.cc
+++ b/src/formats/hevc.cc
@@ -29,7 +29,7 @@
 #endif
 
 #ifndef __BYTE_ORDER
-#warning "setting byte order to little endian"
+//#warning "setting byte order to little endian"
 #define __BYTE_ORDER __LITTLE_ENDIAN
 #endif
 
diff --git a/src/frame.hh b/src/frame.hh
index eef73a8..45803c9 100644
--- a/src/frame.hh
+++ b/src/frame.hh
@@ -112,30 +112,30 @@ namespace kvz_rtp {
             struct rtcp_header header;
             uint32_t sender_ssrc;
             struct rtcp_sender_info s_info;
-            struct rtcp_report_block blocks[0];
+            struct rtcp_report_block blocks[1];
         };
 
         PACKED_STRUCT(rtcp_receiver_frame) {
             struct rtcp_header header;
             uint32_t sender_ssrc;
-            struct rtcp_report_block blocks[0];
+            struct rtcp_report_block blocks[1];
         };
 
         PACKED_STRUCT(rtcp_sdes_item) {
             uint8_t type;
             uint8_t length;
-            uint8_t data[0];
+            uint8_t data[1];
         };
 
         PACKED_STRUCT(rtcp_sdes_frame) {
             struct rtcp_header header;
             uint32_t sender_ssrc;
-            struct rtcp_sdes_item items[0];
+            struct rtcp_sdes_item items[1];
         };
 
         PACKED_STRUCT(rtcp_bye_frame) {
             struct rtcp_header header;
-            uint32_t ssrc[0];
+            uint32_t ssrc[1];
         };
 
         PACKED_STRUCT(rtcp_app_frame) {
@@ -147,7 +147,7 @@ namespace kvz_rtp {
 
             uint32_t ssrc;
             uint8_t name[4];
-            uint8_t payload[0];
+            uint8_t payload[1];
         };
 
         PACKED_STRUCT(zrtp_frame) {
@@ -156,7 +156,7 @@ namespace kvz_rtp {
             uint16_t seq;
             uint32_t magic;
             uint32_t ssrc;
-            uint8_t payload[0];
+            uint8_t payload[1];
         };
 
         /* Allocate an RTP frame
diff --git a/src/queue.hh b/src/queue.hh
index 0cb6328..fbdde36 100644
--- a/src/queue.hh
+++ b/src/queue.hh
@@ -10,6 +10,10 @@
 #include "sender.hh"
 #include "util.hh"
 
+#if defined(_MSC_VER)
+typedef SSIZE_T ssize_t;
+#endif
+
 const int MAX_MSG_COUNT   = 5000;
 const int MAX_QUEUED_MSGS =  10;
 const int MAX_CHUNK_COUNT =   4;
diff --git a/src/rtcp.cc b/src/rtcp.cc
index 36f4a77..e8a95c3 100644
--- a/src/rtcp.cc
+++ b/src/rtcp.cc
@@ -77,10 +77,9 @@ rtp_error_t kvz_rtp::rtcp::add_participant(std::string dst_addr, int dst_port, i
      *
      * This means that the socket is listened for 5s at a time and after the timeout, 
      * Send Report is sent to all participants */
-    struct timeval tv = {
-        .tv_sec  = 3,
-        .tv_usec = 0
-    };
+    struct timeval tv;
+    tv.tv_sec = 3;
+    tv.tv_usec = 0;
 
     if ((ret = p->socket->setsockopt(SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv))) != RTP_OK)
         return ret;
diff --git a/src/socket.cc b/src/socket.cc
index ea642f2..3127c4d 100644
--- a/src/socket.cc
+++ b/src/socket.cc
@@ -1,5 +1,6 @@
 #ifdef _WIN32
 #include <winsock2.h>
+#include <Ws2tcpip.h>
 #include <ws2def.h>
 #else
 #include <unistd.h>
@@ -138,7 +139,7 @@ socket_t& kvz_rtp::socket::get_raw_socket()
 
 rtp_error_t kvz_rtp::socket::__sendto(sockaddr_in& addr, uint8_t *buf, size_t buf_len, int flags, int *bytes_sent)
 {
-    int nsend;
+    int nsend = 0;
 
 #ifdef __linux__
     if ((nsend = ::sendto(socket_, buf, buf_len, flags, (const struct sockaddr *)&addr, sizeof(addr_))) == -1) {
@@ -162,6 +163,7 @@ rtp_error_t kvz_rtp::socket::__sendto(sockaddr_in& addr, uint8_t *buf, size_t bu
             *bytes_sent = -1;
         return RTP_SEND_ERROR;
     }
+    nsend = sent_bytes;
 #endif
 
     if (bytes_sent)
diff --git a/src/util.hh b/src/util.hh
index 09cfa1d..c5dae8b 100644
--- a/src/util.hh
+++ b/src/util.hh
@@ -13,12 +13,16 @@
 #include <cstdio>
 #include <string>
 
+#if defined(_MSC_VER)
+typedef SSIZE_T ssize_t;
+#endif
+
 
 #if defined(__MINGW32__) || defined(__MINGW64__) || defined(__linux__)
 #define PACKED_STRUCT(name) \
     struct __attribute__((packed)) name
 #else
-#warning "structures are not packed!"
+//#warning "structures are not packed!"
 #define PACKED_STRUCT(name) struct name
 #endif