diff --git a/tests/bluetooth/tester/boards/nrf54l15dk_nrf54l15_cpuapp.conf b/tests/bluetooth/tester/boards/nrf54l15dk_nrf54l15_cpuapp.conf
index 5bb1c4d82846..b6a71cd1e6d2 100644
--- a/tests/bluetooth/tester/boards/nrf54l15dk_nrf54l15_cpuapp.conf
+++ b/tests/bluetooth/tester/boards/nrf54l15dk_nrf54l15_cpuapp.conf
@@ -22,3 +22,5 @@ CONFIG_LOG_DEFAULT_LEVEL=3
 CONFIG_BTTESTER_LOG_LEVEL_DBG=y
 
 CONFIG_UART_INTERRUPT_DRIVEN=y
+
+CONFIG_BTTESTER_BTP_CMD_THREAD_STACK_SIZE=3072
diff --git a/tests/bluetooth/tester/overlay-mesh.conf b/tests/bluetooth/tester/overlay-mesh.conf
index 1377d93639a1..04e6c074e214 100644
--- a/tests/bluetooth/tester/overlay-mesh.conf
+++ b/tests/bluetooth/tester/overlay-mesh.conf
@@ -2,7 +2,6 @@
 # PSA key slots; in order to make sure there is always
 # enough key slots allocating 32 slots.
 CONFIG_MBEDTLS_PSA_KEY_SLOT_COUNT=32
-CONFIG_BTTESTER_BTP_CMD_THREAD_STACK_SIZE=3072
 
 CONFIG_BT_MESH=y
 CONFIG_BT_MESH_RELAY=y