diff --git a/boards/sim/sim/sim/configs/adb/defconfig b/boards/sim/sim/sim/configs/adb/defconfig
index 0edd5f5a5c8..c2e8f100293 100644
--- a/boards/sim/sim/sim/configs/adb/defconfig
+++ b/boards/sim/sim/sim/configs/adb/defconfig
@@ -56,4 +56,5 @@ CONFIG_SYSTEM_ADBD=y
 CONFIG_SYSTEM_CLE=y
 CONFIG_SYSTEM_NSH=y
 CONFIG_SYSTEM_PING=y
+CONFIG_SYSTEM_TELNETD_PORT=2323
 CONFIG_TLS_TASK_NELEM=4