1 files changed, 1 insertions, 0 deletions
diff --git a/io_muxer.c b/io_muxer.c
index 3e6514e..919ac43 100644
--- a/io_muxer.c
+++ b/io_muxer.c
@@ -81,6 +81,7 @@ int IoMuxer_OnWrite(struct IoMuxer* io_muxer, int fd,
   struct IoMuxer_Closure closure = {.callback = write_callback, .user = user};
   io_muxer->pfds[io_muxer->size] = pfd;
   io_muxer->closures[io_muxer->size] = closure;
+  io_muxer->size++;
   return 0;
 }