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-rw-r--r--src/rebar_app_info.erl2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/rebar_app_info.erl b/src/rebar_app_info.erl
index de497d5..88d6335 100644
--- a/src/rebar_app_info.erl
+++ b/src/rebar_app_info.erl
@@ -301,7 +301,7 @@ app_file(#app_info_t{app_file=AppFile}) ->
AppFile.
%% @doc sets the .app file for an app.
--spec app_file(t(), file:filename_all()) -> t().
+-spec app_file(t(), file:filename_all() | undefined) -> t().
app_file(AppInfo=#app_info_t{}, AppFile) ->
AppInfo#app_info_t{app_file=AppFile}.