Is this a pattern error or..?

[TEMA]

I've been knitting an easy top-down sweater in the round and am now on the sleeve. I've picked up the stitches off my stitch holder and added 8 more sts from the bottom of the sleeve hole and then it says:
Rounds 1 - 5 Knit
Round 6 - (decrease): K1, make left-slanting dec, k to 3 sts before end of round, make rt-slanting decrease, k1.
Repeat this round until sleeve measures 17" or your preferred length.
Work 10 rounds of 1X1 rib and b.o.
Well, I knit it Round 6 over and over with a decrease at the beginning and end of each round but soon my sleeve was looking very odd and I felt that, if I continued in this way, the sleeve would be a point before I knit 17".
I ripped it back and started again, this time, I did the dec. round and then I did a knit even round. It seems to be coming out much better.
The pattern is from Knitting for Dummies - P. 286
Have I read it wrong?
Thanks,
TEMA

[suzeeq]

Yes, there should be at least one round between decrease rounds, so unless you've overlooked it it's wrong. You can search for 'errata' in books to see if there's any corrections to a pattern.