Index: /trunk/src/VBox/VMM/SSM.cpp
===================================================================
--- /trunk/src/VBox/VMM/SSM.cpp	(revision 23894)
+++ /trunk/src/VBox/VMM/SSM.cpp	(revision 23895)
@@ -3951,5 +3951,5 @@
     if (cch > _1M)
     {
-        AssertMsgFailed(("a %d byte long string, what's this!?!\n"));
+        AssertMsgFailed(("a %zu byte long string, what's this!?!\n", cch));
         return VERR_TOO_MUCH_DATA;
     }