diff --git a/include/libssh2.h b/include/libssh2.h
index 064f25c2..292e64e7 100644
--- a/include/libssh2.h
+++ b/include/libssh2.h
@@ -482,6 +482,7 @@ typedef struct _LIBSSH2_POLLFD {
 #define LIBSSH2_ERROR_ENCRYPT                   -44
 #define LIBSSH2_ERROR_BAD_SOCKET                -45
 #define LIBSSH2_ERROR_KNOWN_HOSTS               -46
+#define LIBSSH2_ERROR_CHANNEL_WINDOW_FULL       -47
 
 /* this is a define to provide the old (<= 1.2.7) name */
 #define LIBSSH2_ERROR_BANNER_NONE LIBSSH2_ERROR_BANNER_RECV
diff --git a/src/channel.c b/src/channel.c
index fa7e6d34..b708dd43 100644
--- a/src/channel.c
+++ b/src/channel.c
@@ -2259,7 +2259,7 @@ static int channel_wait_eof(LIBSSH2_CHANNEL *channel)
 
         if ((channel->remote.window_size == channel->read_avail) &&
             session->api_block_mode)
-            return _libssh2_error(session, LIBSSH2_ERROR_BUFFER_TOO_SMALL,
+            return _libssh2_error(session, LIBSSH2_ERROR_CHANNEL_WINDOW_FULL,
                                   "Receiving channel window has been exhausted");
 
         rc = _libssh2_transport_read(session);