diff --git a/base-foc/src/core/cap_session_component.cc b/base-foc/src/core/cap_session_component.cc
index e0ca25d6f..b86ba2750 100644
--- a/base-foc/src/core/cap_session_component.cc
+++ b/base-foc/src/core/cap_session_component.cc
@@ -118,7 +118,7 @@ void Cap_session_component::free(Native_capability cap)
 
 	Capability_tree::tree()->remove(n);
 	l4_msgtag_t tag = l4_task_unmap(L4_BASE_TASK_CAP,
-	                                l4_obj_fpage(cap.dst(), 0, 0),
+	                                l4_obj_fpage(cap.dst(), 0, L4_FPAGE_RWX),
 	                                L4_FP_ALL_SPACES | L4_FP_DELETE_OBJ);
 	if (l4_msgtag_has_error(tag))
 		PERR("destruction of ipc-gate %lx failed!", (unsigned long) cap.dst());