diff --git a/lib/roken/write_pid.c b/lib/roken/write_pid.c
index acb1eadf3..71e1f766e 100644
--- a/lib/roken/write_pid.c
+++ b/lib/roken/write_pid.c
@@ -41,6 +41,8 @@ RCSID("$Id$");
 #include <unistd.h>
 #include <roken.h>
 
+#include "roken.h"
+
 char *
 pid_file_write (const char *progname)
 {