diff --git a/usermount.c b/usermount.c
index 3aafadd..5875c09 100644
--- a/usermount.c
+++ b/usermount.c
@@ -40,6 +40,7 @@
 #include <sys/stat.h>
 #include <sys/time.h>
 #include <sys/types.h>
+#include <sys/sysmacros.h>
 #include <errno.h>
 #include <glob.h>
 #include <libintl.h>