diff --git a/audioreach/subgraph-stream-vol-playback.m4 b/audioreach/subgraph-stream-vol-playback.m4
index 78b4b4a..4c10519 100644
--- a/audioreach/subgraph-stream-vol-playback.m4
+++ b/audioreach/subgraph-stream-vol-playback.m4
@@ -61,7 +61,7 @@ define(`STREAM_PLAYBACK_ROUTE',
 `}')
 
 dnl
-AR_PCM_PLAYBACK(PCM_DAI_ID, PCM_FORMAT, PCM_MIN_RATE, PCM_MAX_RATE, PCM_MIN_CHANNELS, PCM_MAX_CHANNELS)
+AR_PCM_PLAYBACK(PCM_DAI_ID, `PCM_FORMAT', PCM_MIN_RATE, PCM_MAX_RATE, PCM_MIN_CHANNELS, PCM_MAX_CHANNELS)
 
 AR_SUBGRAPH(SG_INDEX, PCM_DAI_ID, SG_IID_START, PCM_PERF_MODE, PCM_DIRECTION, CONT_SENARIO_ID)
 
diff --git a/util/pcm.m4 b/util/pcm.m4
index ee7bc92..da5c05a 100644
--- a/util/pcm.m4
+++ b/util/pcm.m4
@@ -5,7 +5,7 @@ dnl AR_PCM_PLAYBACK(index, formats, rate_min, rate_max, ch_min, ch_max)
 define(`AR_PCM_PLAYBACK',
 `'
 `SectionPCMCapabilities."`MultiMedia'eval($1 +1 )` Playback'" {'
-`        formats STR($2)'
+`        formats STR(`$2')'
 `        rate_min STR($3)'
 `        rate_max STR($4)'
 `        channels_min STR($5)'