diff --git a/desync.c b/desync.c
index 258eac4..515ae9e 100644
--- a/desync.c
+++ b/desync.c
@@ -9,14 +9,12 @@
     #include <sys/time.h>
     #include <sys/socket.h>
     #include <arpa/inet.h>
-    #include <netinet/tcp.h>
     
     #ifdef __linux__
     #include <sys/mman.h>
     #include <sys/sendfile.h>
     #include <fcntl.h>
-
-    #include <desync.h>
+    #include <linux/tcp.h>
     
     #ifdef MFD_CLOEXEC
         #include <sys/syscall.h>
@@ -24,6 +22,8 @@
     #else
         #define memfd_create(name, flags) fileno(tmpfile())
     #endif
+    #else
+    #include <netinet/tcp.h>
     #endif
 #else
     #include <winsock2.h>
@@ -86,24 +86,25 @@ static inline void delay(long ms)
 void wait_send(int sfd)
 {
     for (int i = 0; params.wait_send && i < 500; i++) {
-        struct tcpi tcpi = {};
+        struct tcp_info tcpi = {};
         socklen_t ts = sizeof(tcpi);
         
         if (getsockopt(sfd, IPPROTO_TCP,
                 TCP_INFO, (char *)&tcpi, &ts) < 0) {
-            uniperror("getsockopt TCP_INFO");
+            perror("getsockopt TCP_INFO");
             break;
         }
-        if (tcpi.state != 1) {
-            LOG(LOG_E, "state: %d\n", tcpi.state);
+        if (tcpi.tcpi_state != 1) {
+            LOG(LOG_E, "state: %d\n", tcpi.tcpi_state);
             return;
         }
-        if (ts < sizeof(tcpi)) {
+        size_t s = (char *)&tcpi.tcpi_notsent_bytes - (char *)&tcpi.tcpi_state;
+        if (ts < s) {
             LOG(LOG_E, "tcpi_notsent_bytes not provided\n");
             params.wait_send = 0;
             break;
         }
-        if (tcpi.notsent_bytes == 0) {
+        if (tcpi.tcpi_notsent_bytes == 0) {
             return;
         }
         LOG(LOG_S, "not sent after %d ms\n", i);
diff --git a/desync.h b/desync.h
index 89989a6..9e480e9 100644
--- a/desync.h
+++ b/desync.h
@@ -1,10 +1 @@
 ssize_t desync(int sfd, char *buffer, size_t bfsize, ssize_t n, ssize_t offset, struct sockaddr *dst, int dp_c);
-
-struct tcpi {
-    uint8_t state;
-    uint8_t r[3];
-    uint32_t rr[5];
-    uint32_t unacked;
-    uint32_t rrr[29];
-    uint32_t notsent_bytes;
-};
\ No newline at end of file