diff --git a/src/structs.h b/src/structs.h
index 78f0a70..9b44598 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -3850,6 +3850,7 @@
     int	diff;
     int	eob;
     int	lastline;
+    int trunc;
 } fill_chars_T;
 
 /*