diff --git a/repos/ports/src/virtualbox/sup.cc b/repos/ports/src/virtualbox/sup.cc
index 1730d2c1e..827cb8b02 100644
--- a/repos/ports/src/virtualbox/sup.cc
+++ b/repos/ports/src/virtualbox/sup.cc
@@ -48,7 +48,7 @@ enum {
 PSUPGLOBALINFOPAGE g_pSUPGlobalInfoPage;
 
 
-struct Periodic_gip : public Genode::Thread_deprecated<4096>
+struct Periodic_gip : public Genode::Thread_deprecated<2*4096>
 {
 	Periodic_gip() : Thread_deprecated("periodic_gip") { start(); }