--- a/ext/win32/lib/win32/resolv.rb
+++ b/ext/win32/lib/win32/resolv.rb
@@ -36,7 +36,7 @@
 
 module Kernel32
   extend Importer
-  dlload "kernel32"
+  dlload "kernel32.dll"
 end
 getv = Kernel32.extern "int GetVersionExA(void *)", :stdcall
 info = [ 148, 0, 0, 0, 0 ].pack('V5') + "\0" * 128