Index: /trunk/include/VBox/hgcmsvc.h
===================================================================
--- /trunk/include/VBox/hgcmsvc.h	(revision 80633)
+++ /trunk/include/VBox/hgcmsvc.h	(revision 80634)
@@ -480,5 +480,5 @@
             break;
         case VBOX_HGCM_SVC_PARM_64BIT:
-            rc = SSMR3PutU32(pSSM, pParm->u.uint64);
+            rc = SSMR3PutU64(pSSM, pParm->u.uint64);
             break;
         case VBOX_HGCM_SVC_PARM_PTR: