diff --git a/reactos/drivers/video/videoprt/videoprt.c b/reactos/drivers/video/videoprt/videoprt.c
index 3fc4bb3e2e2..ff7b14565fb 100644
--- a/reactos/drivers/video/videoprt/videoprt.c
+++ b/reactos/drivers/video/videoprt/videoprt.c
@@ -18,7 +18,7 @@
  * If not, write to the Free Software Foundation,
  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  *
- * $Id: videoprt.c,v 1.24 2004/03/19 20:58:32 navaraf Exp $
+ * $Id: videoprt.c,v 1.25 2004/06/26 22:30:34 navaraf Exp $
  */
 
 #include "videoprt.h"
@@ -534,7 +534,8 @@ VideoPortInitialize(
    RtlCopyMemory(
       &DriverExtension->InitializationData,
       HwInitializationData,
-      sizeof(VIDEO_HW_INITIALIZATION_DATA));
+      min(sizeof(VIDEO_HW_INITIALIZATION_DATA),
+          HwInitializationData->HwInitDataSize));
    DriverExtension->HwContext = HwContext;
 
    RtlCopyMemory(&DriverExtension->RegistryPath, RegistryPath, sizeof(UNICODE_STRING));
diff --git a/reactos/drivers/video/videoprt/videoprt.def b/reactos/drivers/video/videoprt/videoprt.def
index e0bd5ee958d..a5caae0c563 100644
--- a/reactos/drivers/video/videoprt/videoprt.def
+++ b/reactos/drivers/video/videoprt/videoprt.def
@@ -1,4 +1,4 @@
-; $Id: videoprt.def,v 1.7 2004/03/08 20:27:33 dwelch Exp $
+; $Id: videoprt.def,v 1.8 2004/06/26 22:30:34 navaraf Exp $
 ;
 ; vidport.def - export definition file for ReactOS
 ;
@@ -39,6 +39,8 @@ VideoPortMapMemory@24
 VideoPortMoveMemory@12
 VideoPortPutDmaAdapter@8
 VideoPortQueueDpc@12
+VideoPortQueryPerformanceCounter@8
+VideoPortQueryServices@12
 VideoPortReadPortUchar@4
 VideoPortReadPortUshort@4
 VideoPortReadPortUlong@4