diff --git a/ChangeLog b/ChangeLog
index 8e7a96bb85..1190b42a84 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Sun Feb  8 12:48:38 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* ext/win32/lib/win32/registry.rb (Win32::Registry::API): use wide
+	  versions of RegDeleteValue and RegDeleteKey.
+	  [ruby-core:67958] [Bug #10820]
+
 Sat Feb  7 22:13:08 2015  Masaki Suketa <masaki.suketa@nifty.ne.jp>
 
 	* test/win32ole/test_win32ole_record.rb: remove test using .NET
diff --git a/ext/win32/lib/win32/registry.rb b/ext/win32/lib/win32/registry.rb
index c739dc97a2..f0166d69b9 100644
--- a/ext/win32/lib/win32/registry.rb
+++ b/ext/win32/lib/win32/registry.rb
@@ -233,8 +233,8 @@ For detail, see the MSDN[http://msdn.microsoft.com/library/en-us/sysinfo/base/pr
         "long RegEnumKeyExW(void *, long, void *, void *, void *, void *, void *, void *)",
         "long RegQueryValueExW(void *, void *, void *, void *, void *, void *)",
         "long RegSetValueExW(void *, void *, long, long, void *, long)",
-        "long RegDeleteValue(void *, void *)",
-        "long RegDeleteKey(void *, void *)",
+        "long RegDeleteValueW(void *, void *)",
+        "long RegDeleteKeyW(void *, void *)",
         "long RegFlushKey(void *)",
         "long RegCloseKey(void *)",
         "long RegQueryInfoKey(void *, void *, void *, void *, void *, void *, void *, void *, void *, void *, void *, void *)",