diff --git a/src/win/stream.c b/src/win/stream.c
index 097f3497..edc5407c 100644
--- a/src/win/stream.c
+++ b/src/win/stream.c
@@ -56,7 +56,7 @@ int uv_accept(uv_stream_t* server, uv_stream_t* client) {
 int uv_read_start(uv_stream_t* handle, uv_alloc_cb alloc_cb,
     uv_read_cb read_cb) {
   if (handle->flags & UV_HANDLE_READING) {
-    uv__set_sys_error(handle->loop, UV_EALREADY);
+    uv__set_artificial_error(handle->loop, UV_EALREADY);
     return -1;
   }
 
@@ -82,7 +82,7 @@ int uv_read_start(uv_stream_t* handle, uv_alloc_cb alloc_cb,
 int uv_read2_start(uv_stream_t* handle, uv_alloc_cb alloc_cb,
     uv_read2_cb read_cb) {
   if (handle->flags & UV_HANDLE_READING) {
-    uv__set_sys_error(handle->loop, UV_EALREADY);
+    uv__set_artificial_error(handle->loop, UV_EALREADY);
     return -1;
   }