diff --git a/src/add-ons/kernel/busses/ide/legacy_sata/legacy_sata.c b/src/add-ons/kernel/busses/ide/legacy_sata/legacy_sata.c
index 95fba1adfc..5d6b89fafc 100644
--- a/src/add-ons/kernel/busses/ide/legacy_sata/legacy_sata.c
+++ b/src/add-ons/kernel/busses/ide/legacy_sata/legacy_sata.c
@@ -184,6 +184,7 @@ controller_probe(device_node_handle parent)
 			break;
 	}
 
+	bus_master_base &= ~PCI_address_space;
 	for (index = 0; index < num_channels; index++) {
 		command_block_base[index] &= ~PCI_address_space;
 		control_block_base[index] &= ~PCI_address_space;