diff --git a/lib/roken/roken.h b/lib/roken/roken.h
index b18c18bf2..c92ffdc25 100644
--- a/lib/roken/roken.h
+++ b/lib/roken/roken.h
@@ -61,6 +61,10 @@
 #include <netinet/in.h>
 #endif
 
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+
 #ifdef HAVE_TERMIOS_H
 #include <termios.h>
 #endif
diff --git a/lib/roken/roken.h.in b/lib/roken/roken.h.in
index b18c18bf2..c92ffdc25 100644
--- a/lib/roken/roken.h.in
+++ b/lib/roken/roken.h.in
@@ -61,6 +61,10 @@
 #include <netinet/in.h>
 #endif
 
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+
 #ifdef HAVE_TERMIOS_H
 #include <termios.h>
 #endif