diff --git a/dsp/q6adm.c b/dsp/q6adm.c
index 688012f727d9..4946987861f2 100644
--- a/dsp/q6adm.c
+++ b/dsp/q6adm.c
@@ -2895,8 +2895,9 @@ int adm_open(int port_id, int path, int rate, int channel_mode, int topology,
 			open_v8.endpoint_id_2 = 0xFFFF;
 			open_v8.endpoint_id_3 = 0xFFFF;
 
-			if ((this_adm.ec_ref_rx != -1) &&
-			    (path != ADM_PATH_PLAYBACK)) {
+			if (((this_adm.ec_ref_rx & AFE_PORT_INVALID) !=
+				AFE_PORT_INVALID) &&
+				(path != ADM_PATH_PLAYBACK)) {
 				if (this_adm.num_ec_ref_rx_chans != 0) {
 					open_v8.endpoint_id_2 =
 						this_adm.ec_ref_rx;