--- tvision/classes/ipstream.cc
+++ tvision/classes/ipstream.cc
@@ -19,6 +19,7 @@
  *
  */
 #include <assert.h>
+#include <stdio.h>
 #define Uses_string
 #define Uses_TStreamable
 #define Uses_TStreamableClass
--- tvision/include/tv/textdev.h
+++ tvision/include/tv/textdev.h
@@ -16,6 +16,8 @@
 #if defined( Uses_TTextDevice ) && !defined( __TTextDevice )
 #define __TTextDevice
 
+#include <stdio.h>
+
 class TRect;
 class TScrollBar;