diff --git a/src/regexp_nfa.c b/src/regexp_nfa.c
index 609da03..a21c3c0 100644
--- a/src/regexp_nfa.c
+++ b/src/regexp_nfa.c
@@ -4523,6 +4523,7 @@
 		    sub->list.multi[subidx].start_col =
 					  (colnr_T)(reginput - regline + off);
 		}
+		sub->list.multi[subidx].end_lnum = -1;
 	    }
 	    else
 	    {