diff --git a/lib/c/2014/labcomm2014_compat_tc31.h b/lib/c/2014/labcomm2014_compat_tc31.h
index e525e8749782c7ba845818625ff8a90f4e96d577..4f6f97574335cda96598e09d7cbdd33a26af4d14 100644
--- a/lib/c/2014/labcomm2014_compat_tc31.h
+++ b/lib/c/2014/labcomm2014_compat_tc31.h
@@ -8,6 +8,7 @@
 #define ECONNRESET 101
 #define ENOTSUP 102
 #define EALREADY 103
+#define ENODATA 104
 
 #define inline __inline