1 files changed, 1 insertions, 1 deletions

diff --git a/firmware/export/mp3_playback.h b/firmware/export/mp3_playback.h
index 9eb1d882ff..12ef734bfe 100644
--- a/firmware/export/mp3_playback.h
+++ b/firmware/export/mp3_playback.h
@@ -51,7 +51,7 @@ void demand_irq_enable(bool on);
 
 /* new functions, exported to plugin API */
 void mp3_play_init(void);
-void mp3_play_data(unsigned char* start, int size,
+void mp3_play_data(const unsigned char* start, int size,
     void (*get_more)(unsigned char** start, int* size) /* callback fn */
 );
 void mp3_play_pause(bool play);