1 files changed, 1 insertions, 1 deletions

diff --git a/apps/plugins/metronome.c b/apps/plugins/metronome.c
index 297405571f..54af82fa76 100644
--- a/apps/plugins/metronome.c
+++ b/apps/plugins/metronome.c
@@ -683,7 +683,7 @@ int bpm_step_counter = 0;
 #define MET_IS_PLAYING rb->mp3_is_playing()
 #define MET_PLAY_STOP rb->mp3_play_stop()
 
-static void callback(unsigned char** start, size_t* size)
+static void callback(const void** start, size_t* size)
 {
     (void)start; /* unused parameter, avoid warning */
     *size = 0; /* end of data */