diff --git a/lib/std/os/windows/advapi32.zig b/lib/std/os/windows/advapi32.zig
index bace7ce850..ff2719568c 100644
--- a/lib/std/os/windows/advapi32.zig
+++ b/lib/std/os/windows/advapi32.zig
@@ -33,3 +33,33 @@ pub extern "advapi32" fn RegCloseKey(hKey: HKEY) callconv(WINAPI) LSTATUS;
 // http://msdn.microsoft.com/en-us/library/windows/desktop/aa387694.aspx */
 pub extern "advapi32" fn SystemFunction036(output: [*]u8, length: ULONG) callconv(WINAPI) BOOL;
 pub const RtlGenRandom = SystemFunction036;
+
+pub const RRF = struct {
+    pub const RT_ANY: DWORD = 0x0000ffff;
+
+    pub const RT_DWORD: DWORD = 0x00000018;
+    pub const RT_QWORD: DWORD = 0x00000048;
+
+    pub const RT_REG_BINARY: DWORD = 0x00000008;
+    pub const RT_REG_DWORD: DWORD = 0x00000010;
+    pub const RT_REG_EXPAND_SZ: DWORD = 0x00000004;
+    pub const RT_REG_MULTI_SZ: DWORD = 0x00000020;
+    pub const RT_REG_NONE: DWORD = 0x00000001;
+    pub const RT_REG_QWORD: DWORD = 0x00000040;
+    pub const RT_REG_SZ: DWORD = 0x00000002;
+
+    pub const NOEXPAND: DWORD = 0x10000000;
+    pub const ZEROONFAILURE: DWORD = 0x20000000;
+    pub const SUBKEY_WOW6464KEY: DWORD = 0x00010000;
+    pub const SUBKEY_WOW6432KEY: DWORD = 0x00020000;
+};
+
+pub extern "advapi32" fn RegGetValueW(
+    hkey: HKEY,
+    lpSubKey: LPCWSTR,
+    lpValue: LPCWSTR,
+    dwFlags: DWORD,
+    pdwType: ?*DWORD,
+    pvData: ?*anyopaque,
+    pcbData: ?*DWORD,
+) callconv(WINAPI) LSTATUS;