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-rw-r--r--lib/os_mon/src/cpu_sup.erl2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/os_mon/src/cpu_sup.erl b/lib/os_mon/src/cpu_sup.erl
index 0c26956c57..b4ad8e2aa0 100644
--- a/lib/os_mon/src/cpu_sup.erl
+++ b/lib/os_mon/src/cpu_sup.erl
@@ -121,7 +121,7 @@ util(Args) when is_list (Args) ->
util(_) ->
erlang:error(badarg).
--spec util() -> float().
+-spec util() -> float() | {'error', any()}.
util() ->
case util([]) of