diff --git a/spa/plugins/audioconvert/audioconvert.c b/spa/plugins/audioconvert/audioconvert.c
index bf847efef..cf77e4ac5 100644
--- a/spa/plugins/audioconvert/audioconvert.c
+++ b/spa/plugins/audioconvert/audioconvert.c
@@ -430,22 +430,10 @@ static int impl_node_enum_params(struct spa_node *node, int seq,
 		break;
 
 	case SPA_PARAM_PropInfo:
-		switch (result.index) {
-		case 0:
-			return spa_node_enum_params(this->channelmix, seq, id, start, num, filter);
-		default:
-			return 0;
-		}
-		break;
+		return spa_node_enum_params(this->channelmix, seq, id, start, num, filter);
 
 	case SPA_PARAM_Props:
-		switch (result.index) {
-		case 0:
-			return spa_node_enum_params(this->channelmix, seq, id, start, num, filter);
-		default:
-			return 0;
-		}
-		break;
+		return spa_node_enum_params(this->channelmix, seq, id, start, num, filter);
 
 	default:
 		return -ENOENT;
diff --git a/spa/plugins/audioconvert/channelmix.c b/spa/plugins/audioconvert/channelmix.c
index 548709e72..e140f5652 100644
--- a/spa/plugins/audioconvert/channelmix.c
+++ b/spa/plugins/audioconvert/channelmix.c
@@ -478,7 +478,7 @@ static int impl_node_enum_params(struct spa_node *node, int seq,
 				SPA_TYPE_OBJECT_PropInfo, id,
 				SPA_PROP_INFO_id,   SPA_POD_Id(SPA_PROP_mute),
 				SPA_PROP_INFO_name, SPA_POD_String("Mute"),
-				SPA_PROP_INFO_type, SPA_POD_Bool(p->mute));
+				SPA_PROP_INFO_type, SPA_POD_CHOICE_Bool(p->mute));
 			break;
 		default:
 			return 0;