diff --git a/reactos/lib/setupapi/devinst.c b/reactos/lib/setupapi/devinst.c
index f62dc264a74..67c5c61b5bb 100644
--- a/reactos/lib/setupapi/devinst.c
+++ b/reactos/lib/setupapi/devinst.c
@@ -3737,7 +3737,7 @@ done:
     {
         if (DeviceInfoData)
         {
-            struct DeviceInfoElement *deviceInfo = (struct DeviceInfoElement *)DeviceInfoData;
+            struct DeviceInfoElement *deviceInfo = (struct DeviceInfoElement *)DeviceInfoData->Reserved;
             deviceInfo->Flags |= DI_DIDCOMPAT;
         }
         else