diff --git a/tests/gnrc_ipv6_nib_dns/Makefile b/tests/gnrc_ipv6_nib_dns/Makefile
index ea4515e19d..7814c222a3 100644
--- a/tests/gnrc_ipv6_nib_dns/Makefile
+++ b/tests/gnrc_ipv6_nib_dns/Makefile
@@ -29,8 +29,8 @@ LOW_MEMORY_BOARDS := nucleo-f334r8 msb-430 msb-430h
 
 ifeq ($(BOARD),$(filter $(BOARD),$(LOW_MEMORY_BOARDS)))
     CFLAGS += -DGNRC_PKTBUF_SIZE=512 -DCONFIG_GNRC_NETIF_IPV6_ADDRS_NUMOF=2 \
-              -DGNRC_NETIF_IPV6_GROUPS_NUMOF=2 -DGNRC_IPV6_NIB_NUMOF=1 \
-              -DNRC_IPV6_NIB_OFFL_NUMOF=1
+              -DGNRC_NETIF_IPV6_GROUPS_NUMOF=2 -DCONFIG_GNRC_IPV6_NIB_NUMOF=1 \
+              -DCONFIG_GNRC_IPV6_NIB_OFFL_NUMOF=1
 endif
 
 # The test requires some setup and to be run as root
diff --git a/tests/gnrc_sock_dns/Makefile b/tests/gnrc_sock_dns/Makefile
index 27fa575476..cfc529abe9 100644
--- a/tests/gnrc_sock_dns/Makefile
+++ b/tests/gnrc_sock_dns/Makefile
@@ -33,7 +33,7 @@ LOW_MEMORY_BOARDS := nucleo-f334r8 msb-430 msb-430h
 ifeq ($(BOARD),$(filter $(BOARD),$(LOW_MEMORY_BOARDS)))
     CFLAGS += -DGNRC_PKTBUF_SIZE=512 -DCONFIG_GNRC_NETIF_IPV6_ADDRS_NUMOF=2 \
               -DGNRC_NETIF_IPV6_GROUPS_NUMOF=2 -DCONFIG_GNRC_IPV6_NIB_NUMOF=1 \
-              -DNRC_IPV6_NIB_OFFL_NUMOF=1
+              -DCONFIG_GNRC_IPV6_NIB_OFFL_NUMOF=1
 endif
 
 # The test requires some setup and to be run as root