diff --git a/lib/rex/post/meterpreter/extensions/stdapi/railgun/def/windows/def_wldap32.rb b/lib/rex/post/meterpreter/extensions/stdapi/railgun/def/windows/def_wldap32.rb
index 7626f614b520..f6fd74440a53 100644
--- a/lib/rex/post/meterpreter/extensions/stdapi/railgun/def/windows/def_wldap32.rb
+++ b/lib/rex/post/meterpreter/extensions/stdapi/railgun/def/windows/def_wldap32.rb
@@ -32,7 +32,7 @@ def self.create_library(constant_manager, library_path = 'wldap32')
         ['PCHAR', 'filter', 'in'],
         ['PCHAR', 'attrs[]', 'in'],
         ['DWORD', 'attrsonly', 'in'],
-        ['PULONG_PTR', 'res', 'out']
+        ['PLPVOID', 'res', 'out']
     ], 'ldap_search_sA', "cdecl")
 
     dll.add_function('ldap_set_option', 'DWORD',[
@@ -50,9 +50,9 @@ def self.create_library(constant_manager, library_path = 'wldap32')
         ['DWORD', 'attrsonly', 'in'],
         ['PVOID', 'pServerControls', 'in'],
         ['PVOID', 'pClientControls', 'in'],
-        ['PLONGLONG', 'pTimeout', 'in'],
+        ['PBLOB', 'pTimeout', 'in'],
         ['DWORD', 'SizeLimit', 'in'],
-        ['PULONG_PTR', 'res', 'out']
+        ['PLPVOID', 'res', 'out']
     ], 'ldap_search_ext_sA', "cdecl")
 
     dll.add_function('ldap_count_entries', 'DWORD',[