diff --git a/src/mame/layout/coco3.lay b/src/mame/layout/coco3.lay
index bebd45729eb..5bb06a96148 100644
--- a/src/mame/layout/coco3.lay
+++ b/src/mame/layout/coco3.lay
@@ -1,13 +1,16 @@
 <?xml version="1.0"?>
 <mamelayout version="2">
 	<view name="Composite">
-		<screen index="0">
 		<bounds left="0" top="0" right="4" bottom="3" />
-	</screen>
+		<screen index="0">
+			<bounds left="0" top="0" right="4" bottom="3" />
+		</screen>
+		<!-- workaround for MAME selecting a 2-screen view by default -->
+		<screen index="1"><bounds left="10" top="0" right="14" bottom="3" /></screen>
 	</view>
 
 	<view name="RGB">
-	<screen index="1">
+		<screen index="1">
 			<bounds left="0" top="0" right="4" bottom="3" />
 		</screen>
 	</view>