diff --git a/subsys/bluetooth/host/Kconfig b/subsys/bluetooth/host/Kconfig
index cc59273baa8..aedb109c510 100644
--- a/subsys/bluetooth/host/Kconfig
+++ b/subsys/bluetooth/host/Kconfig
@@ -22,7 +22,7 @@ config BT_HCI_TX_STACK_SIZE
 	default 416 if BT_SPI
 	default 940 if BT_CTLR && BT_LL_SW_SPLIT && NO_OPTIMIZATIONS
 	default 1024 if BT_CTLR && BT_LL_SW_SPLIT && BT_CENTRAL
-	default 640 if BT_CTLR && BT_LL_SW_SPLIT
+	default 768 if BT_CTLR && BT_LL_SW_SPLIT
 	default 512 if BT_USERCHAN
 	default 640 if BT_STM32_IPM
 	# Even if no driver is selected the following default is still