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-rw-r--r--lib/sasl/src/rb_format_supp.erl2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/sasl/src/rb_format_supp.erl b/lib/sasl/src/rb_format_supp.erl
index 1eda43dae4..b5b7aba151 100644
--- a/lib/sasl/src/rb_format_supp.erl
+++ b/lib/sasl/src/rb_format_supp.erl
@@ -108,7 +108,7 @@ print(Date, Report, Device) ->
format_h(Line, Header, Pid, Date) ->
NHeader = lists:flatten(io_lib:format("~s ~w", [Header, Pid])),
- DateLen = length(Date),
+ DateLen = string:length(Date),
HeaderLen = Line - DateLen,
Format = lists:concat(["~-", HeaderLen, "s~", DateLen, "s"]),
io_lib:format(Format, [NHeader, Date]).