1 files changed, 1 insertions, 1 deletions

diff --git a/apps/playlist_viewer.h b/apps/playlist_viewer.h
index 27f2e354c5..0caa23b6db 100644
--- a/apps/playlist_viewer.h
+++ b/apps/playlist_viewer.h
@@ -22,7 +22,7 @@
 #define _PLAYLIST_VIEWER_H_
 
 bool playlist_viewer(void);
-bool playlist_viewer_ex(char* filename);
+bool playlist_viewer_ex(const char* filename);
 bool search_playlist(void);
 
 #endif