diff --git a/vpc.mappings.rb b/vpc.mappings.rb
index d9cc6a8..09a7146 100644
--- a/vpc.mappings.rb
+++ b/vpc.mappings.rb
@@ -68,7 +68,7 @@ def self.getMaps(config)
           end
         end
         @@maps = maps
-        FileUtils.mkpath (File.dirname (cached_mappings_path )) unless File.exists? (File.dirname (cached_mappings_path))
+        FileUtils.mkpath (File.dirname (cached_mappings_path )) unless File.exist? (File.dirname (cached_mappings_path))
         File.write(cached_mappings_path, maps.to_yaml)
         return maps
       end
@@ -85,4 +85,4 @@ def self.getDefaultKey
 
   end
 
-end
\ No newline at end of file
+end