Index: /trunk/src/VBox/Additions/common/VBoxGuestLib/GenericRequest.cpp
===================================================================
--- /trunk/src/VBox/Additions/common/VBoxGuestLib/GenericRequest.cpp	(revision 29359)
+++ /trunk/src/VBox/Additions/common/VBoxGuestLib/GenericRequest.cpp	(revision 29360)
@@ -80,5 +80,6 @@
         || pReq->requestType == VMMDevReq_HGCMCall
 #endif /* VBOX_WITH_64_BITS_GUESTS */
-        || pReq->requestType == VMMDevReq_ChangeMemBalloon)
+        || pReq->requestType == VMMDevReq_ChangeMemBalloon
+        || pReq->requestType == VMMDevReq_RegisterSharedModule)
     {
         if (cbReq > VMMDEV_MAX_VMMDEVREQ_SIZE)