diff --git a/src/lfd/lockdaemon.c b/src/lfd/lockdaemon.c
index bdb8553..d13c5eb 100644
--- a/src/lfd/lockdaemon.c
+++ b/src/lfd/lockdaemon.c
@@ -30,6 +30,7 @@
 #include <errno.h>
 #include <signal.h>
 #include <pwd.h>
+#include <limits.h>
 
 #define FHS
 #define LOCKFILEPREFIX "LCK.."