diff --git a/firmware/pcm_playback.c b/firmware/pcm_playback.c
index ccac7843ad..bdc0e63acc 100644
--- a/firmware/pcm_playback.c
+++ b/firmware/pcm_playback.c
@@ -526,6 +526,11 @@ void pcm_play_stop(void)
 {
 }
 
+void pcm_mute(bool mute)
+{
+    (void)mute;
+}
+
 void pcm_play_pause(bool play)
 {
     (void)play;
diff --git a/uisimulator/common/stubs.c b/uisimulator/common/stubs.c
index d6170e13ca..d4862a0f85 100644
--- a/uisimulator/common/stubs.c
+++ b/uisimulator/common/stubs.c
@@ -40,6 +40,11 @@ bool pcm_is_playing(void)
     return playing;
 }
 
+void pcm_mute(bool state)
+{
+    (void)state;
+}
+
 void pcm_play_pause(bool state)
 {
     (void)state;