diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index c3a6ccdcda..76d6ef8e48 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1928,12 +1928,14 @@ struct _virDomainOSEnv {
 
 typedef enum {
     VIR_DOMAIN_OS_DEF_FIRMWARE_NONE = 0,
-    VIR_DOMAIN_OS_DEF_FIRMWARE_BIOS,
-    VIR_DOMAIN_OS_DEF_FIRMWARE_EFI,
+    VIR_DOMAIN_OS_DEF_FIRMWARE_BIOS = VIR_DOMAIN_LOADER_TYPE_ROM,
+    VIR_DOMAIN_OS_DEF_FIRMWARE_EFI = VIR_DOMAIN_LOADER_TYPE_PFLASH,
 
     VIR_DOMAIN_OS_DEF_FIRMWARE_LAST
 } virDomainOsDefFirmware;
 
+G_STATIC_ASSERT((int)VIR_DOMAIN_OS_DEF_FIRMWARE_LAST == (int)VIR_DOMAIN_LOADER_TYPE_LAST);
+
 VIR_ENUM_DECL(virDomainOsDefFirmware);
 
 struct _virDomainOSDef {
diff --git a/src/qemu/qemu_firmware.c b/src/qemu/qemu_firmware.c
index a835fe6b4a..7fb57913e8 100644
--- a/src/qemu/qemu_firmware.c
+++ b/src/qemu/qemu_firmware.c
@@ -929,7 +929,7 @@ qemuFirmwareMatchesMachineArch(const qemuFirmware *fw,
 
 
 static qemuFirmwareOSInterface
-qemuFirmwareOSInterfaceTypeFromOsDefFirmware(virDomainOsDefFirmware fw)
+qemuFirmwareOSInterfaceTypeFromOsDefFirmware(int fw)
 {
     switch (fw) {
     case VIR_DOMAIN_OS_DEF_FIRMWARE_BIOS: