X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=doc%2Fcdeftutorial.pod;h=b2016a23c9a1308ced6ca4ecd67803f62c38a15a;hp=1c17046c64c047afcbc5e6dfc4ebc047d1504388;hb=c0783df3e5992e36de2722e9664e8beb20519740;hpb=18da71fe788387ff3b04ddd8bbfebfe2f5bbf05c

diff --git a/doc/cdeftutorial.pod b/doc/cdeftutorial.pod
index 1c17046..b2016a2 100644
--- a/doc/cdeftutorial.pod
+++ b/doc/cdeftutorial.pod
@@ -862,7 +862,7 @@ You may do some complex data filtering:
 
     DEF:var=database.rrd:traffic:AVERAGE
     CDEF:prev1=PREV(var)
-    CDEF:time=TIME
+    CDEF:time=var,POP,TIME
     CDEF:prevtime=PREV(time)
     CDEF:derivate=var,prev1,-,time,prevtime,-,/
     LINE3:derivate#000077:derivate