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-rw-r--r--lib/stdlib/src/erl_anno.erl2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/stdlib/src/erl_anno.erl b/lib/stdlib/src/erl_anno.erl
index 963b7278a6..9fb767fc93 100644
--- a/lib/stdlib/src/erl_anno.erl
+++ b/lib/stdlib/src/erl_anno.erl
@@ -147,7 +147,7 @@ is_anno2(_, _) ->
false.
is_filename(T) ->
- is_string(T) orelse is_binary(T).
+ is_list(T) orelse is_binary(T).
is_string(T) ->
try lists:all(fun(C) when is_integer(C), C >= 0 -> true end, T)