diff --git a/tests/unittests/Makefile b/tests/unittests/Makefile
index ae15cfab7..f9b76e527 100644
--- a/tests/unittests/Makefile
+++ b/tests/unittests/Makefile
@@ -12,7 +12,8 @@ BOARD_INSUFFICIENT_MEMORY := airfy-beacon cc2650stk chronos ek-lm4f120xl \
                           nucleo-f030 nucleo-f070 nucleo-f091 pba-d-01-kw2x \
                           saml21-xpro microbit calliope-mini limifrog-v1 \
                           slwstk6220a ek-lm4f120xl stm32f3discovery \
-                          slwstk6220a nucleo32-f042 nucleo32-f303 opencm9-04
+                          slwstk6220a nucleo32-f042 nucleo32-f303 opencm9-04 \
+                          seeeduino_arch-pro remote-pa remote-revb remote-reva
 
 USEMODULE += embunit
 
diff --git a/tests/unittests/tests-tweetnacl/Makefile.include b/tests/unittests/tests-tweetnacl/Makefile.include
index 0cfb96f9f..9c8efe2c4 100644
--- a/tests/unittests/tests-tweetnacl/Makefile.include
+++ b/tests/unittests/tests-tweetnacl/Makefile.include
@@ -1,2 +1,4 @@
 USEMODULE += random
 USEPKG += tweetnacl
+
+CFLAGS += -DTHREAD_STACKSIZE_MAIN=\(2*THREAD_STACKSIZE_DEFAULT+THREAD_EXTRA_STACKSIZE_PRINTF\)