dnsmasq dhcp ignoring dhcp-host definitions

I am currently puzzled by the dnsmasq configuration, and I hope someone here can help me... I've setup successfully the DHCP-Server with dnsmasq, and I've tried to include some static Host configurations based on the MAC-Addresses of the clients. Here is my dnsmasq.conf:

# port to listen for DNS queries. If set to 0, disables DNS functionality.
port=0
domain=fritz.box
dhcp-range=192.168.13.50,192.168.13.150,255.255.255.0,4h
dhcp-range=192.168.13.0,static,255.255.255.0,12h
dhcp-boot=pxelinux.0,pxeserver,192.168.13.10
# Gateway
dhcp-option=3,192.168.13.1
# DNS
dhcp-option=6,192.168.13.1
# Network Broadcast Address
dhcp-option=28,192.168.13.255
# Network Time Servers
dhcp-option=42,192.168.13.1

# linux-gurke
dhcp-host=00:1e:4f:d7:24:5e,192.186.13.6


pxe-prompt="Press F8 for menu.", 60
pxe-service=x86PC, "PXE boot from raspi", pxelinux
enable-tftp
tftp-root=/var/lib/tftpboot
dhcp-authoritative

But for some reason, even though I have an matching dhcp-host line - the host is not getting the static ip:

Oct 30 19:53:51 raspi dnsmasq-dhcp[9759]: DHCPDISCOVER(br0) 00:1e:4f:d7:24:5e
Oct 30 19:53:51 raspi dnsmasq-dhcp[9759]: DHCPOFFER(br0) 192.168.13.92 00:1e:4f:d7:24:5e
Oct 30 19:53:51 raspi dnsmasq-dhcp[9759]: DHCPREQUEST(br0) 192.168.13.92 00:1e:4f:d7:24:5e
Oct 30 19:53:51 raspi dnsmasq-dhcp[9759]: DHCPACK(br0) 192.168.13.92 00:1e:4f:d7:24:5e linux-gurke

What am I missing / doing wrong ? Any ideas?