diff --git a/configs/pc/machines/5170/ega/640kb/debugger/machine.xml b/configs/pc/machines/5170/ega/640kb/debugger/machine.xml
index 92e13d20a..b038e3180 100644
--- a/configs/pc/machines/5170/ega/640kb/debugger/machine.xml
+++ b/configs/pc/machines/5170/ega/640kb/debugger/machine.xml
@@ -6,7 +6,7 @@
 	<cpu id="cpu286" model="80286"/>
 	<ram id="ramLow" addr="0x00000" test="false" size="0xa0000" comment="0xa0000 (640Kb) size overrides SW1|ROM BIOS memory test has been disabled"/>
 	<rom id="romEGA" addr="0xc0000" size="0x4000" file="/devices/pc/video/ibm-ega.json" notify="videoEGA"/>
-	<rom id="romBIOS" addr="0xf0000" size="0x10000" alias="0xff0000" file="/devices/pc/bios/5170/1984-01-10.rom"/>
+	<rom id="romBIOS" addr="0xf0000" size="0x10000" alias="0xff0000" file="/devices/pc/bios/5170/1984-01-10.json"/>
 	<video id="videoEGA" model="ega" memory="0x20000" screenwidth="640" screenheight="350" pos="center" padding="8px">
 		<name>Enhanced Color Display</name>
 	</video>