diff --git a/src/devices/bus/multibus/isbc202.cpp b/src/devices/bus/multibus/isbc202.cpp
index c8fe127c277..864856eca8c 100644
--- a/src/devices/bus/multibus/isbc202.cpp
+++ b/src/devices/bus/multibus/isbc202.cpp
@@ -108,7 +108,7 @@ enum {
 };
 
 // device type definition
-DEFINE_DEVICE_TYPE(ISBC202, isbc202_device, "iSBC202", "iSBC-202 floppy controller")
+DEFINE_DEVICE_TYPE(ISBC202, isbc202_device, "isbc202", "iSBC-202 floppy controller")
 
 // Microcode disassembler
 class isbc202_disassembler : public util::disasm_interface
diff --git a/src/devices/bus/multibus/multibus.cpp b/src/devices/bus/multibus/multibus.cpp
index d962e01070b..11ee4e7fb0d 100644
--- a/src/devices/bus/multibus/multibus.cpp
+++ b/src/devices/bus/multibus/multibus.cpp
@@ -13,7 +13,7 @@
 #include "isbc202.h"
 
 // device type definition
-DEFINE_DEVICE_TYPE(MULTIBUS_SLOT, multibus_slot_device, "Multibus slot", "Intel Multibus slot")
+DEFINE_DEVICE_TYPE(MULTIBUS_SLOT, multibus_slot_device, "multibus_slot", "Intel Multibus slot")
 
 multibus_slot_device::multibus_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
 	: device_t(mconfig , MULTIBUS_SLOT , tag , owner , clock)