diff --git a/base/file.jl b/base/file.jl
index d76e81f62364e..15150f44a2281 100644
--- a/base/file.jl
+++ b/base/file.jl
@@ -179,6 +179,8 @@ function mkdir(path::AbstractString; mode::Integer = 0o777)
             uv_error("mkdir($(repr(path)); mode=0o$(string(mode,base=8)))", ret)
         end
         ccall(:uv_fs_req_cleanup, Cvoid, (Ptr{Cvoid},), req)
+        # mode is not implemented in mkdir in libuv yet, so do it here
+        Sys.iswindows() && chmod(path, mode)
         return path
     finally
         Libc.free(req)