diff --git a/src/add-ons/kernel/busses/scsi/ahci/ahci_controller.cpp b/src/add-ons/kernel/busses/scsi/ahci/ahci_controller.cpp
index e9f23846fd..f60ad4e15d 100644
--- a/src/add-ons/kernel/busses/scsi/ahci/ahci_controller.cpp
+++ b/src/add-ons/kernel/busses/scsi/ahci/ahci_controller.cpp
@@ -82,7 +82,7 @@ AHCIController::Init()
 
 	uint16 pcicmd = gPCI->read_pci_config(fPCIDevice, PCI_command, 2);
 	TRACE("pcicmd old 0x%04x\n", pcicmd);
-	pcicmd = PCI_PCICMD_BME | PCI_PCICMD_MSE | (pcicmd & ~PCI_PCICMD_IOS);
+	pcicmd = PCI_command_master | PCI_command_memory | (pcicmd & ~PCI_command_io);
 	TRACE("pcicmd new 0x%04x\n", pcicmd);
 	gPCI->write_pci_config(fPCIDevice, PCI_command, 2, pcicmd);
 
diff --git a/src/add-ons/kernel/busses/scsi/ahci/ahci_defs.h b/src/add-ons/kernel/busses/scsi/ahci/ahci_defs.h
index 28b7ae6045..7861682826 100644
--- a/src/add-ons/kernel/busses/scsi/ahci/ahci_defs.h
+++ b/src/add-ons/kernel/busses/scsi/ahci/ahci_defs.h
@@ -219,10 +219,6 @@ extern scsi_for_sim_interface *gSCSI;
 #define HI32(val) (((uint64)(val)) >> 32)
 #define ASSERT(expr) if (expr) {} else panic(#expr)
 
-#define PCI_PCICMD_IOS	0x01
-#define PCI_PCICMD_MSE	0x02
-#define PCI_PCICMD_BME	0x04
-
 #define PCI_VENDOR_INTEL	0x8086
 #define PCI_VENDOR_JMICRON	0x197b
 #define PCI_JMICRON_CONTROLLER_CONTROL_1	0x40