diff --git a/tcl/target/stm32h7x.cfg b/tcl/target/stm32h7x.cfg
index 43a8b024e..5220af3b1 100644
--- a/tcl/target/stm32h7x.cfg
+++ b/tcl/target/stm32h7x.cfg
@@ -149,8 +149,10 @@ $_CHIPNAME.cpu0 configure -event examine-end {
 	stm32h7x_dbgmcu_mmw 0x004 0x00600000 0
 
 	# Enable debug during low power modes (uses more power)
-	# DBGMCU_CR |= DBG_STANDBY | DBG_STOP | DBG_SLEEP in D3, D2 & D1 Domains
-	stm32h7x_dbgmcu_mmw 0x004 0x000001BF 0
+	# DBGMCU_CR |= DBG_STANDBY | DBG_STOP | DBG_SLEEP D1 Domain
+	stm32h7x_dbgmcu_mmw 0x004 0x00000007 0
+	# DBGMCU_CR |= DBG_STANDBY | DBG_STOP | DBG_SLEEP D2 Domain
+	stm32h7x_dbgmcu_mmw 0x004 0x00000038 0
 
 	# Stop watchdog counters during halt
 	# DBGMCU_APB3FZ1 |= WWDG1