diff --git a/libdaemon/server/daemon-server.c b/libdaemon/server/daemon-server.c
index 79b54d0..e768e7e 100644
--- a/libdaemon/server/daemon-server.c
+++ b/libdaemon/server/daemon-server.c
@@ -30,6 +30,7 @@
 #include <sys/un.h>
 #include <unistd.h>
 #include <signal.h>
+#include <fcntl.h>
 
 #include <syslog.h> /* FIXME. For the global closelog(). */