Index: generic/src/main/uinit.c
===================================================================
--- generic/src/main/uinit.c	(revision 9f525639659c979c952ae9372c881791de6d13aa)
+++ generic/src/main/uinit.c	(revision 9d3e1855e93f6f539485179792734488bb54fd7c)
@@ -44,4 +44,7 @@
 	uarg.uspace_entry = ((uspace_arg_t *) arg)->uspace_entry;
 	uarg.uspace_stack = ((uspace_arg_t *) arg)->uspace_stack;
+	uarg.uspace_uarg = ((uspace_arg_t *) arg)->uspace_uarg;
+	uarg.uspace_thread_function = NULL;
+	uarg.uspace_thread_arg = NULL;
 
 	free((uspace_arg_t *) arg);