diff --git a/src/globals.h b/src/globals.h
index f729154..fd4e70c 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -752,6 +752,12 @@
  */
 EXTERN pos_T	Insstart;		/* This is where the latest
 					 * insert/append mode started. */
+
+/* This is where the latest insert/append mode started. In contrast to
+ * Insstart, this won't be reset by certain keys and is needed for
+ * op_insert(), to detect correctly where inserting by the user started. */
+EXTERN pos_T	Insstart_orig;
+
 #ifdef FEAT_VREPLACE
 /*
  * Stuff for VREPLACE mode.