diff --git a/examples/gnrc_border_router/Makefile b/examples/gnrc_border_router/Makefile
index bf3af7f9fcd9b01300e36e44524642467a857092..c0331642f28512f240b6ac6b0cb825a296dc155f 100644
--- a/examples/gnrc_border_router/Makefile
+++ b/examples/gnrc_border_router/Makefile
@@ -10,8 +10,6 @@ RIOTBASE ?= $(CURDIR)/../..
 BOARD_INSUFFICIENT_MEMORY := airfy-beacon nrf51dongle nrf6310 pca10000 pca10005 nucleo-f334 \
                              spark-core stm32f0discovery yunjia-nrf51822
 
-BOARD_BLACKLIST := arduino-mega2560     # panic_arch not defined
-
 ifeq (,$(SLIP_UART))
   # set default (last available UART)
   SLIP_UART="(UART_NUMOF-1)"
diff --git a/examples/gnrc_networking/Makefile b/examples/gnrc_networking/Makefile
index 3c19daef3fc4b95258677fe9e638f5ae84910f50..e0b2be14ac951fde28aad96dd8c9dbc3cf4261ce 100644
--- a/examples/gnrc_networking/Makefile
+++ b/examples/gnrc_networking/Makefile
@@ -12,7 +12,7 @@ BOARD_INSUFFICIENT_MEMORY := airfy-beacon chronos msb-430 msb-430h nrf51dongle \
                           stm32f0discovery telosb wsn430-v1_3b wsn430-v1_4 \
                           yunjia-nrf51822 z1
 
-BOARD_BLACKLIST        := arduino-mega2560 spark-core
+BOARD_BLACKLIST        := spark-core
 # arduino-mega2560: unknown error types (e.g. -EBADMSG)
 
 # Include packages that pull up and auto-init the link layer.