Error in the Polivoks BOM?

Technology Synth-DIY
#1

Hi,
I noticed that for the CD4053 triple SPDT switch (IC 9) the total number in the Polivoks BOM is two. But there is only one slot for the IC 9. I am wondering if this is a mistake … or am I missing something here?

Cheers
Frank

#2

Yes, this is a mistake, fixed.