diff --git a/tests/bluetooth/tester/boards/native_sim.conf b/tests/bluetooth/tester/boards/native_sim.conf
index bbd5e556e72bd..9781be36b6917 100644
--- a/tests/bluetooth/tester/boards/native_sim.conf
+++ b/tests/bluetooth/tester/boards/native_sim.conf
@@ -1,9 +1,3 @@
 CONFIG_UART_PIPE=n
 CONFIG_SERIAL=y
 CONFIG_UART_NATIVE_PTY=y
-
-CONFIG_BT_BUF_CMD_TX_COUNT=8
-CONFIG_BT_BUF_EVT_DISCARDABLE_COUNT=3
-CONFIG_BT_BUF_EVT_DISCARDABLE_SIZE=255
-CONFIG_BT_BUF_ACL_TX_COUNT=6
-CONFIG_BT_BUF_ACL_RX_COUNT_EXTRA=10