diff --git a/lib/roken/roken.h b/lib/roken/roken.h
index 0e958f99d..80a170a62 100644
--- a/lib/roken/roken.h
+++ b/lib/roken/roken.h
@@ -342,6 +342,10 @@ extern const char *__progname;
 
 void set_progname(char *argv0);
 
+#ifndef F_OK
+#define F_OK 0
+#endif
+
 #ifdef HAVE_PATHS_H
 #include <paths.h>
 #endif
diff --git a/lib/roken/roken.h.in b/lib/roken/roken.h.in
index 0e958f99d..80a170a62 100644
--- a/lib/roken/roken.h.in
+++ b/lib/roken/roken.h.in
@@ -342,6 +342,10 @@ extern const char *__progname;
 
 void set_progname(char *argv0);
 
+#ifndef F_OK
+#define F_OK 0
+#endif
+
 #ifdef HAVE_PATHS_H
 #include <paths.h>
 #endif