diff --git a/include/libssh2.h b/include/libssh2.h
index 172e9b3..3cb2be5 100644
--- a/include/libssh2.h
+++ b/include/libssh2.h
@@ -593,7 +593,7 @@ LIBSSH2_API int libssh2_poll(LIBSSH2_POLLFD *fds, unsigned int nfds,
                              long timeout);
 
 /* Channel API */
-#define LIBSSH2_CHANNEL_WINDOW_DEFAULT  (256*1024)
+#define LIBSSH2_CHANNEL_WINDOW_DEFAULT  (2*1024*1024)
 #define LIBSSH2_CHANNEL_PACKET_DEFAULT  32768
 #define LIBSSH2_CHANNEL_MINADJUST       1024