Installation xymon-4.3.18

when I type last command to install the program
sudo make install
i get this
.....cp -fp xymongrep xymondigest xymon xymoncmd xymonlaunch xymoncfg y/server/bin/
cp: target `y/server/bin/' is not a directory
make[1]: *** [install-bin] Error 1
make[1]: Leaving directory `/home/ak/xymon/xymon-4.3.18/common'
make: *** [install-common] Error 2
ak at ubuntu:~/xymon/xymon-4.3.18$ 

what can i do?
Thank you for your support! 

Aleš Krek