diff --git a/dlls/qcap/dllsetup.c b/dlls/qcap/dllsetup.c
index 8de99ece1a2..ad3d84c4f7d 100644
--- a/dlls/qcap/dllsetup.c
+++ b/dlls/qcap/dllsetup.c
@@ -54,37 +54,6 @@ static WCHAR const tmodel_keyname[15] =
 static WCHAR const tmodel_both[] =
 {'B','o','t','h',0};
 
-/*
- * Delete a key and all its subkeys
- */
-static HRESULT DeleteEntireSubKey(HKEY hkey, LPWSTR strSubKey)
-{
-    WCHAR buffer[MAX_KEY_LEN];
-    DWORD dw = MAX_KEY_LEN;
-    FILETIME ft;
-    HKEY hk;
-    LONG ret = RegOpenKeyExW(hkey, strSubKey, 0, MAXIMUM_ALLOWED, &hk);
-
-    if (ERROR_SUCCESS == ret)
-    {
-        /* Keep on enumerating the first key and deleting that */
-        for( ; ; )
-        {
-            dw = MAX_KEY_LEN;
-
-            ret = RegEnumKeyExW(hk, 0, buffer, &dw, NULL, NULL, NULL, &ft);
-
-            if (ERROR_SUCCESS == ret)
-                DeleteEntireSubKey(hk, buffer);
-            else
-                break;
-        }
-        RegCloseKey(hk);
-        RegDeleteKeyW(hkey, strSubKey);
-    }
-    return NOERROR;
-}
-
 /*
  * SetupRegisterClass()
  */
@@ -252,7 +221,7 @@ static HRESULT SetupRegisterAllClasses(const CFactoryTemplate * pList, int num,
                                         pList->m_Name, szFileName,
                                         ips32_keyname, tmodel_both);
             else
-                hr = DeleteEntireSubKey(hkey, szCLSID);
+                hr = RegDeleteTreeW(hkey, szCLSID);
         }
     }
     RegCloseKey(hkey);