diff --git a/deps/uv/src/win/pipe.c b/deps/uv/src/win/pipe.c
index 2436b036f9..0fb70eae32 100644
--- a/deps/uv/src/win/pipe.c
+++ b/deps/uv/src/win/pipe.c
@@ -915,7 +915,7 @@ static void uv_pipe_queue_read(uv_loop_t* loop, uv_pipe_t* handle) {
   } else {
     memset(&req->overlapped, 0, sizeof(req->overlapped));
     if (handle->flags & UV_HANDLE_EMULATE_IOCP) {
-      req->overlapped.hEvent = (HANDLE) ((DWORD) req->event_handle | 1);
+      req->overlapped.hEvent = (HANDLE) ((uintptr_t) req->event_handle | 1);
     }
 
     /* Do 0-read */
diff --git a/deps/uv/src/win/tcp.c b/deps/uv/src/win/tcp.c
index 7158216131..c3ef6533d5 100644
--- a/deps/uv/src/win/tcp.c
+++ b/deps/uv/src/win/tcp.c
@@ -113,7 +113,8 @@ static int uv_tcp_set_socket(uv_loop_t* loop, uv_tcp_t* handle,
     non_ifs_lsp = uv_tcp_non_ifs_lsp_ipv4;
   }
 
-  if (pSetFileCompletionNotificationModes && !non_ifs_lsp) {
+  if (pSetFileCompletionNotificationModes &&
+      !(handle->flags & UV_HANDLE_EMULATE_IOCP) && !non_ifs_lsp) {
     if (pSetFileCompletionNotificationModes((HANDLE) socket,
         FILE_SKIP_SET_EVENT_ON_HANDLE |
         FILE_SKIP_COMPLETION_PORT_ON_SUCCESS)) {