diff --git a/include/uv-private/uv-unix.h b/include/uv-private/uv-unix.h
index da185e29..ea60799e 100644
--- a/include/uv-private/uv-unix.h
+++ b/include/uv-private/uv-unix.h
@@ -102,7 +102,7 @@ struct uv__io_s {
   int inotify_fd;
 #elif defined(PORT_SOURCE_FILE)
 # define UV_LOOP_PRIVATE_PLATFORM_FIELDS              \
-  ev_io fs_event_watcher;                             \
+  uv__io_t fs_event_watcher;                          \
   int fs_fd;
 #else
 # define UV_LOOP_PRIVATE_PLATFORM_FIELDS
diff --git a/src/unix/sunos.c b/src/unix/sunos.c
index 906e69fb..7ad816f9 100644
--- a/src/unix/sunos.c
+++ b/src/unix/sunos.c
@@ -128,26 +128,27 @@ static void uv__fs_event_rearm(uv_fs_event_t *handle) {
 }
 
 
-static void uv__fs_event_read(EV_P_ ev_io* w, int revents) {
+static void uv__fs_event_read(uv_loop_t* loop, uv__io_t* w, int revents) {
   uv_fs_event_t *handle;
-  uv_loop_t *loop_;
   timespec_t timeout;
   port_event_t pe;
   int events;
   int r;
 
-  loop_ = container_of(w, uv_loop_t, fs_event_watcher);
+  (void) w;
+  (void) revents;
 
   do {
     /* TODO use port_getn() */
     do {
       memset(&timeout, 0, sizeof timeout);
-      r = port_get(loop_->fs_fd, &pe, &timeout);
+      r = port_get(loop->fs_fd, &pe, &timeout);
     }
     while (r == -1 && errno == EINTR);
 
     if (r == -1 && errno == ETIME)
       break;
+
     handle = (uv_fs_event_t *)pe.portev_user;
     assert((r == 0) && "unexpected port_get() error");
 
@@ -199,8 +200,8 @@ int uv_fs_event_init(uv_loop_t* loop,
   uv__fs_event_rearm(handle);
 
   if (first_run) {
-    ev_io_init(&loop->fs_event_watcher, uv__fs_event_read, portfd, EV_READ);
-    ev_io_start(loop->ev, &loop->fs_event_watcher);
+    uv__io_init(&loop->fs_event_watcher, uv__fs_event_read, portfd, UV__IO_READ);
+    uv__io_start(loop, &loop->fs_event_watcher);
   }
 
   return 0;