diff --git a/lib/libshare/os/linux/nfs.c b/lib/libshare/os/linux/nfs.c
index bc949213f..a6a9b33d7 100644
--- a/lib/libshare/os/linux/nfs.c
+++ b/lib/libshare/os/linux/nfs.c
@@ -31,6 +31,7 @@
 #include <string.h>
 #include <strings.h>
 #include <errno.h>
+#include <fcntl.h>
 #include <sys/file.h>
 #include <sys/stat.h>
 #include <sys/types.h>