diff --git a/fhem/fhem.pl b/fhem/fhem.pl
index 2c7887b16..2f20042bc 100755
--- a/fhem/fhem.pl
+++ b/fhem/fhem.pl
@@ -85,13 +85,13 @@ sub Log($$);
 sub Log3($$$);
 sub OldTimestamp($);
 sub OldValue($);
-sub OldReadingsAge($$$;$);
+sub OldReadingsAge($$$);
 sub OldReadingsNum($$$;$);
 sub OldReadingsTimestamp($$$);
 sub OldReadingsVal($$$);
 sub OpenLogfile($);
 sub PrintHash($$);
-sub ReadingsAge($$$;$);
+sub ReadingsAge($$$);
 sub ReadingsNum($$$;$);
 sub ReadingsTimestamp($$$);
 sub ReadingsVal($$$);