diff --git a/examples/gcoap/Makefile b/examples/gcoap/Makefile
index 460a40e7efa5..8201bcaa859a 100644
--- a/examples/gcoap/Makefile
+++ b/examples/gcoap/Makefile
@@ -77,11 +77,11 @@ endif
 # Uncomment the following lines to specify static link lokal IPv6 address
 # this might be useful for testing, in cases where you cannot or do not want to
 # run a shell with ifconfig to get the real link lokal address.
-# IPV6_STATIC_LLADDR ?= '"fe80::cafe:cafe:cafe:1"'
-# CFLAGS += -DCONFIG_GNRC_IPV6_STATIC_LLADDR=$(IPV6_STATIC_LLADDR)
+ IPV6_STATIC_LLADDR ?= '"fe80::cafe:cafe:cafe:1"'
+ CFLAGS += -DCONFIG_GNRC_IPV6_STATIC_LLADDR=$(IPV6_STATIC_LLADDR)
 # uncomment to not increment the last digit by the inderface number
-# CFLAGS += -DCONFIG_GNRC_IPV6_STATIC_LLADDR_IS_FIXED=1
-# CFLAGS += -DCONFIG_GNRC_NETIF_IPV6_ADDRS_NUMOF=4
+ CFLAGS += -DCONFIG_GNRC_IPV6_STATIC_LLADDR_IS_FIXED=1
+ CFLAGS += -DCONFIG_GNRC_NETIF_IPV6_ADDRS_NUMOF=4
 
 include $(RIOTBASE)/Makefile.include