diff --git a/dlls/advpack/advpack.c b/dlls/advpack/advpack.c
index 18f33e4616c..da86f7561ce 100644
--- a/dlls/advpack/advpack.c
+++ b/dlls/advpack/advpack.c
@@ -428,6 +428,38 @@ void WINAPI RegisterOCX( HWND hWnd, HINSTANCE hInst, LPCSTR cmdline, INT show )
 /***********************************************************************
  *             SetPerUserSecValuesA   (ADVPACK.@)
  *
+ * See SetPerUserSecValuesW.
+ */
+HRESULT WINAPI SetPerUserSecValuesA(PERUSERSECTIONA* pPerUser)
+{
+    PERUSERSECTIONW perUserW;
+
+    TRACE("(%p)\n", pPerUser);
+
+    if (!pPerUser)
+        return E_INVALIDARG;
+
+    MultiByteToWideChar(CP_ACP, 0, pPerUser->szGUID, -1, perUserW.szGUID,
+                        sizeof(perUserW.szGUID) / sizeof(WCHAR));
+    MultiByteToWideChar(CP_ACP, 0, pPerUser->szDispName, -1, perUserW.szDispName,
+                        sizeof(perUserW.szDispName) / sizeof(WCHAR));
+    MultiByteToWideChar(CP_ACP, 0, pPerUser->szLocale, -1, perUserW.szLocale,
+                        sizeof(perUserW.szLocale) / sizeof(WCHAR));
+    MultiByteToWideChar(CP_ACP, 0, pPerUser->szStub, -1, perUserW.szStub,
+                        sizeof(perUserW.szStub) / sizeof(WCHAR));
+    MultiByteToWideChar(CP_ACP, 0, pPerUser->szVersion, -1, perUserW.szVersion,
+                        sizeof(perUserW.szVersion) / sizeof(WCHAR));
+    MultiByteToWideChar(CP_ACP, 0, pPerUser->szCompID, -1, perUserW.szCompID,
+                        sizeof(perUserW.szCompID) / sizeof(WCHAR));
+    perUserW.dwIsInstalled = pPerUser->dwIsInstalled;
+    perUserW.bRollback = pPerUser->bRollback;
+
+    return SetPerUserSecValuesW(&perUserW);
+}
+
+/***********************************************************************
+ *             SetPerUserSecValuesW   (ADVPACK.@)
+ *
  * Prepares the per-user stub values under IsInstalled\{GUID} that
  * control the per-user installation.
  *
@@ -441,7 +473,7 @@ void WINAPI RegisterOCX( HWND hWnd, HINSTANCE hInst, LPCSTR cmdline, INT show )
  * BUGS
  *   Unimplemented.
  */
-HRESULT WINAPI SetPerUserSecValuesA(PERUSERSECTIONA* pPerUser)
+HRESULT WINAPI SetPerUserSecValuesW(PERUSERSECTIONW* pPerUser)
 {
     FIXME("(%p) stub\n", pPerUser);
 
diff --git a/dlls/advpack/advpack.spec b/dlls/advpack/advpack.spec
index 3ebe3576fd8..6d4b1d1043b 100644
--- a/dlls/advpack/advpack.spec
+++ b/dlls/advpack/advpack.spec
@@ -66,7 +66,7 @@
 # stdcall RunSetupCommandW(long wstr wstr wstr wstr wptr long ptr)
 @ stdcall RunSetupCommand(long str str str str ptr long ptr) RunSetupCommandA
 @ stdcall SetPerUserSecValuesA(ptr)
-# stdcall SetPerUserSecValuesW(ptr)
+@ stdcall SetPerUserSecValuesW(ptr)
 @ stdcall SetPerUserSecValues(ptr) SetPerUserSecValuesA
 @ stdcall TranslateInfStringA(str str str str ptr long ptr ptr)
 @ stdcall TranslateInfStringW(wstr wstr wstr wstr ptr long ptr ptr)