diff --git a/src/structs.h b/src/structs.h
index d68468c..686aa8f 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -3519,6 +3519,7 @@
     int	foldsep;
     int	diff;
     int	eob;
+    int	lastline;
 } fill_chars_T;
 
 /*