diff --git a/tests/emcute/Makefile b/tests/emcute/Makefile
index 69c27ae01d..bde386ca99 100644
--- a/tests/emcute/Makefile
+++ b/tests/emcute/Makefile
@@ -25,6 +25,8 @@ USEMODULE += sock_util
 
 CFLAGS += -DEMCUTE_TOPIC_MAXLEN="249"   # 256 - 7
 CFLAGS += -DSTDIO_UART_RX_BUFSIZE="512" # Adapt to SHELL_BUFSIZE in app
+CFLAGS += -DGNRC_NETIF_SINGLE           # Only one interface used and it makes
+                                        # shell commands easier
 
 # The test requires some setup and to be run as root
 # So it cannot currently be run
diff --git a/tests/gnrc_sock_dns/Makefile b/tests/gnrc_sock_dns/Makefile
index 1a2f8238ef..27fa575476 100644
--- a/tests/gnrc_sock_dns/Makefile
+++ b/tests/gnrc_sock_dns/Makefile
@@ -4,6 +4,9 @@ RIOTBASE ?= $(CURDIR)/../..
 
 export TAP ?= tap0
 
+CFLAGS += -DGNRC_NETIF_SINGLE           # Only one interface used and it makes
+                                        # shell commands easier
+
 USEMODULE += sock_dns
 USEMODULE += gnrc_sock_udp
 USEMODULE += gnrc_ipv6_default
diff --git a/tests/gnrc_tcp/Makefile b/tests/gnrc_tcp/Makefile
index 09320692b5..98011bfa21 100644
--- a/tests/gnrc_tcp/Makefile
+++ b/tests/gnrc_tcp/Makefile
@@ -15,6 +15,8 @@ TEST_ON_CI_BLACKLIST += all
 CFLAGS += -DSHELL_NO_ECHO
 CFLAGS += -DGNRC_TCP_MSL=$(MSL_US)
 CFLAGS += -DGNRC_TCP_CONNECTION_TIMEOUT_DURATION=$(TIMEOUT_US)
+CFLAGS += -DGNRC_NETIF_SINGLE           # Only one interface used and it makes
+                                        # shell commands easier
 
 ifeq (native,$(BOARD))
   TERMFLAGS ?= $(TAP)