diff --git a/src/conf/cards/ICE1724.conf b/src/conf/cards/ICE1724.conf
index 8f0a6361..e3a29f6e 100644
--- a/src/conf/cards/ICE1724.conf
+++ b/src/conf/cards/ICE1724.conf
@@ -76,6 +76,7 @@ ICE1724.pcm.iec958.0 {
 		type integer
 	}
 	type hooks
+	slave.pcm {
 		type hw
 		card $CARD
 		device 1