1 files changed, 1 insertions, 0 deletions
diff --git a/hdlctest.c b/hdlctest.c
index d69aaae..fd74bbb 100644
--- a/hdlctest.c
+++ b/hdlctest.c
@@ -2,6 +2,7 @@
 #include <fcntl.h>
 #include <string.h>
 #include <errno.h>
+#include <linux/types.h>
 #include <linux/zaptel.h>
 #include <stdio.h>
 #include <linux/types.h>