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-rw-r--r--doc/tshark.pod2
1 files changed, 1 insertions, 1 deletions
diff --git a/doc/tshark.pod b/doc/tshark.pod
index 4c4a639b24..56412a0b92 100644
--- a/doc/tshark.pod
+++ b/doc/tshark.pod
@@ -814,7 +814,7 @@ which only calculates the number of packets and bytes in each interval.
B<io,stat> can also do much more statistics and calculate COUNT(), SUM(),
MIN(), MAX(), AVG() and LOAD() using a slightly different filter syntax:
-=item -z io,stat,E<34>[COUNT|SUM|MIN|MAX|AVG|LOAD](I<field>)I<field> [and I<filter>]E<34>
+=item -z io,stat,I<interval>,E<34>[COUNT|SUM|MIN|MAX|AVG|LOAD](I<field>)I<field> [and I<filter>]E<34>
NOTE: One important thing to note here is that the field that the
calculation is based on MUST also be part of the filter string or