diff --git a/src/conf/cards/RME9636.conf b/src/conf/cards/RME9636.conf
index e8dc5fad..17b3a1ab 100644
--- a/src/conf/cards/RME9636.conf
+++ b/src/conf/cards/RME9636.conf
@@ -4,7 +4,7 @@
 
 <confdir:pcm/front.conf>
 
-RME9636.pcm.front.0 {
+RME9636.pcm.front.!0 {
 	@args [ CARD ]
 	@args.CARD {
 		type string
@@ -17,7 +17,7 @@ RME9636.pcm.front.0 {
 
 <confdir:pcm/iec958.conf>
 
-RME9636.pcm.iec958.0 {
+RME9636.pcm.iec958.!0 {
 	@args [ CARD AES0 AES1 AES2 AES3 ]
 	@args.CARD {
 		type string
diff --git a/src/conf/cards/RME9652.conf b/src/conf/cards/RME9652.conf
index 1147d810..a11e42b2 100644
--- a/src/conf/cards/RME9652.conf
+++ b/src/conf/cards/RME9652.conf
@@ -4,7 +4,7 @@
 
 <confdir:pcm/front.conf>
 
-RME9652.pcm.front.0 {
+RME9652.pcm.front.!0 {
 	@args [ CARD ]
 	@args.CARD {
 		type string
@@ -17,7 +17,7 @@ RME9652.pcm.front.0 {
 
 <confdir:pcm/iec958.conf>
 
-RME9652.pcm.iec958.0 {
+RME9652.pcm.iec958.!0 {
 	@args [ CARD AES0 AES1 AES2 AES3 ]
 	@args.CARD {
 		type string