diff --git a/tools/topology/topology2/include/common/audio_format.conf b/tools/topology/topology2/include/common/audio_format.conf
index 598d269e6..9ce8e35cb 100644
--- a/tools/topology/topology2/include/common/audio_format.conf
+++ b/tools/topology/topology2/include/common/audio_format.conf
@@ -96,7 +96,7 @@ Class.Base."audio_format" {
 		constraints {
 			!valid_values [
 				$SAMPLE_TYPE_MSB_INTEGER
-				SAMPLE_TYPE_LSB_INTEGER
+				$SAMPLE_TYPE_LSB_INTEGER
 				$SAMPLE_TYPE_SIGNED_INTEGER
 				$SAMPLE_TYPE_UNSIGNED_INTEGER
 				$SAMPLE_TYPE_FLOAT
@@ -185,7 +185,7 @@ Class.Base."audio_format" {
 		constraints {
 			!valid_values [
 				$SAMPLE_TYPE_MSB_INTEGER
-				SAMPLE_TYPE_LSB_INTEGER
+				$SAMPLE_TYPE_LSB_INTEGER
 				$SAMPLE_TYPE_SIGNED_INTEGER
 				$SAMPLE_TYPE_UNSIGNED_INTEGER
 				$SAMPLE_TYPE_FLOAT