diff --git a/contrib/libs/libenet/include/enet/enet.h b/contrib/libs/libenet/include/enet/enet.h
index c5b0ec4dd..fc45cbd0c 100644
--- a/contrib/libs/libenet/include/enet/enet.h
+++ b/contrib/libs/libenet/include/enet/enet.h
@@ -25,7 +25,7 @@ extern "C"
 
 #define ENET_VERSION_MAJOR 1
 #define ENET_VERSION_MINOR 3
-#define ENET_VERSION_PATCH 16
+#define ENET_VERSION_PATCH 17
 #define ENET_VERSION_CREATE(major, minor, patch) (((major)<<16) | ((minor)<<8) | (patch))
 #define ENET_VERSION_GET_MAJOR(version) (((version)>>16)&0xFF)
 #define ENET_VERSION_GET_MINOR(version) (((version)>>8)&0xFF)
diff --git a/contrib/libs/libenet/protocol.c b/contrib/libs/libenet/protocol.c
index da5d61832..9d654f1d9 100644
--- a/contrib/libs/libenet/protocol.c
+++ b/contrib/libs/libenet/protocol.c
@@ -1411,8 +1411,8 @@ enet_protocol_check_outgoing_commands (ENetHost * host, ENetPeer * peer)
                   outgoingCommand -> sendAttempts < 1 && 
                   ! (outgoingCommand -> reliableSequenceNumber % ENET_PEER_RELIABLE_WINDOW_SIZE) &&
                   (channel -> reliableWindows [(reliableWindow + ENET_PEER_RELIABLE_WINDOWS - 1) % ENET_PEER_RELIABLE_WINDOWS] >= ENET_PEER_RELIABLE_WINDOW_SIZE ||
-                    channel -> usedReliableWindows & ((((1 << (ENET_PEER_FREE_RELIABLE_WINDOWS + 1)) - 1) << reliableWindow) |
-                      (((1 << (ENET_PEER_FREE_RELIABLE_WINDOWS + 1)) - 1) >> (ENET_PEER_RELIABLE_WINDOWS - reliableWindow)))))
+                    channel -> usedReliableWindows & ((((1 << (ENET_PEER_FREE_RELIABLE_WINDOWS + 2)) - 1) << reliableWindow) |
+                      (((1 << (ENET_PEER_FREE_RELIABLE_WINDOWS + 2)) - 1) >> (ENET_PEER_RELIABLE_WINDOWS - reliableWindow)))))
                 windowWrap = 1;
              if (windowWrap)
              {