diff --git a/src/conf/cards/vc4-hdmi.conf b/src/conf/cards/vc4-hdmi.conf
index 0f313d82..7041d185 100644
--- a/src/conf/cards/vc4-hdmi.conf
+++ b/src/conf/cards/vc4-hdmi.conf
@@ -3,7 +3,7 @@
 # subframe conversion
 #
 
-vc4-hdmi.pcm.hdmi.0 {
+vc4-hdmi.pcm.hdmi.!0 {
 	@args [ CARD AES0 AES1 AES2 AES3 ]
 	@args.CARD {
 		type string
@@ -50,7 +50,7 @@ vc4-hdmi.pcm.hdmi.0 {
 }
 
 # default with plug and softvol
-vc4-hdmi.pcm.default {
+vc4-hdmi.pcm.!default {
 	@args [ CARD ]
 	@args.CARD {
 		type string