diff --git a/src/structs.h b/src/structs.h
index c3f0312..5de3a68 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -1449,6 +1449,7 @@
      * start and end of an operator, also used for '[ and ']
      */
     pos_T	b_op_start;
+    pos_T	b_op_start_orig;  /* used for Insstart_orig */
     pos_T	b_op_end;
 
 #ifdef FEAT_VIMINFO