Index: /trunk/src/VBox/Devices/Storage/VBoxSCSI.h
===================================================================
--- /trunk/src/VBox/Devices/Storage/VBoxSCSI.h	(revision 43660)
+++ /trunk/src/VBox/Devices/Storage/VBoxSCSI.h	(revision 43661)
@@ -59,5 +59,5 @@
  * Any write to the register at offset 3 causes the interface to be reset. A read returns
  * the SCSI status code of the last operation.
- * 
+ *
  * This part has no R0 or GC components.
  */
@@ -116,5 +116,8 @@
     uint32_t             iBuf;
     /** The result code of last operation. */
-    int                  rcCompletion;
+    int32_t              rcCompletion;
+#if HC_ARCH_BITS == 64
+    uint32_t             Alignment1;
+#endif
     /** Flag whether a request is pending. */
     volatile bool        fBusy;