diff --git a/dialyzer.exs b/dialyzer.exs
index b7302ed..e2bc7cb 100644
--- a/dialyzer.exs
+++ b/dialyzer.exs
@@ -307,7 +307,7 @@ defmodule Dialyzer do
 
   defp filter(
          dialyzer_warning =
-           {:warn_matching, {~c"lib/iex/helpers.ex", {708, 8}},
+           {:warn_matching, {~c"lib/iex/helpers.ex", {707, 8}},
             {:pattern_match,
              [
                ~c"pattern <__key@1, 'nil'>",