diff --git a/builtin-pickaxe.c b/builtin-pickaxe.c
index 74c7c9a33b..b595299bf8 100644
--- a/builtin-pickaxe.c
+++ b/builtin-pickaxe.c
@@ -1085,6 +1085,9 @@ static int prepare_lines(struct scoreboard *sb)
 			bol = 1;
 		}
 	}
+	sb->lineno = xrealloc(sb->lineno,
+			      sizeof(int* ) * (num + incomplete + 1));
+	sb->lineno[num + incomplete] = buf - sb->final_buf;
 	sb->num_lines = num + incomplete;
 	return sb->num_lines;
 }