diff --git a/lib/dav4rack/remote_file.rb b/lib/dav4rack/remote_file.rb
index 3e3a329f..4196515d 100644
--- a/lib/dav4rack/remote_file.rb
+++ b/lib/dav4rack/remote_file.rb
@@ -28,7 +28,7 @@ module Dav4rack
       @heads = {}
       @cache_file = args[:cache_directory] ? cache_file_path : nil
       @redefine_prefix = nil
-      if(@cache_file && File.exists?(@cache_file))
+      if(@cache_file && File.exist?(@cache_file))
         @root = ''
         @path_info = @cache_file
         @path = @path_info