diff --git a/src/mess/drivers/amstrad.c b/src/mess/drivers/amstrad.c
index 9bd11eec6d0..944ef9a0a40 100644
--- a/src/mess/drivers/amstrad.c
+++ b/src/mess/drivers/amstrad.c
@@ -1026,6 +1026,7 @@ static MACHINE_CONFIG_DERIVED( aleste, amstrad )
 	MCFG_PALETTE_INIT_OVERRIDE(amstrad_state,aleste)
 	MCFG_MC146818_ADD( "rtc", MC146818_IGNORE_CENTURY )
 
+	MCFG_DEVICE_REMOVE("upd765")
 	MCFG_I8272A_ADD("upd765", true)
 
 	MCFG_FLOPPY_DRIVE_ADD("upd765:0", aleste_floppies, "525hd", 0, aleste_floppy_formats)
diff --git a/src/mess/machine/amstrad.c b/src/mess/machine/amstrad.c
index 7ff1af47572..7151e397db5 100644
--- a/src/mess/machine/amstrad.c
+++ b/src/mess/machine/amstrad.c
@@ -2118,10 +2118,10 @@ The exception is the case where none of b7-b0 are reset (i.e. port &FBFF), which
                      * "1" the FDD motor will be active.
                      * "0" the FDD motor will be in-active.*/
 					floppy_image_device *floppy;
-					floppy = machine().device<floppy_connector>(":upd765a:0")->get_device();
+					floppy = machine().device<floppy_connector>(":upd765:0")->get_device();
 					if(floppy)
 						floppy->mon_w(!BIT(data, 0));
-					floppy = machine().device<floppy_connector>(":upd765a:1")->get_device();
+					floppy = machine().device<floppy_connector>(":upd765:1")->get_device();
 					if(floppy)
 						floppy->mon_w(!BIT(data, 0));
 				  break;