diff --git a/openbsd-compat/bsd-getpagesize.c b/openbsd-compat/bsd-getpagesize.c
index 9daddfbd3..416a8d4cb 100644
--- a/openbsd-compat/bsd-getpagesize.c
+++ b/openbsd-compat/bsd-getpagesize.c
@@ -1,5 +1,7 @@
 /* Placed in the public domain */
 
+#include "includes.h"
+
 #ifndef HAVE_GETPAGESIZE
 
 #include <unistd.h>