diff --git a/lib/tests/io/90-stat.c b/lib/tests/io/90-stat.c
index e63547d1..b7f400b3 100644
--- a/lib/tests/io/90-stat.c
+++ b/lib/tests/io/90-stat.c
@@ -22,6 +22,7 @@
 #include <errno.h>
 #include <stdio.h>
 #include <string.h>
+#include <fcntl.h>
 #include <sys/stat.h>