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)