diff --git a/src/lisp/print.c b/src/lisp/print.c
index b4758d8b4ead18b44731f469456b28aa5c1ad28a..1898fee24c4e61475251efc60cfcde427b35b135 100644
--- a/src/lisp/print.c
+++ b/src/lisp/print.c
@@ -11,6 +11,8 @@
 #include "print.h"
 #include "lisp.h"
 #include "internals.h"
+#include "os.h"
+#include "interr.h"
 #include "monitor.h"
 #include "vars.h"
 #include "os.h"