diff --git a/env/iss/link.lds b/env/iss/link.lds
index e4c71c9..272d8f5 100644
--- a/env/iss/link.lds
+++ b/env/iss/link.lds
@@ -178,7 +178,7 @@ SECTIONS
     PROVIDE( _sp = . );
   } >ram AT>ram :ram
 
-  PROVIDE( tohost = 0xfffffff0 );
-  PROVIDE( fromhost = 0xfffffff8 );
+  PROVIDE( tohost = . );
+  PROVIDE( fromhost = . + 8 );
 }
 
diff --git a/libwrap/sys/_exit.c b/libwrap/sys/_exit.c
index 660485c..30c8293 100644
--- a/libwrap/sys/_exit.c
+++ b/libwrap/sys/_exit.c
@@ -3,6 +3,7 @@
 #include "weak_under_alias.h"
 //#include <stdint.h>
 #include <unistd.h>
+#include <stdint.h>
 #if defined(SEMIHOSTING)
 #include "semihosting.h"
 #endif