diff --git a/libavformat/mp3.c b/libavformat/mp3.c
index 1e4f21c5b2..ae63d6c341 100644
--- a/libavformat/mp3.c
+++ b/libavformat/mp3.c
@@ -30,7 +30,7 @@
 
 #define ID3v1_GENRE_MAX 125
 
-static const char *id3v1_genre_str[ID3v1_GENRE_MAX + 1] = {
+static const char * const id3v1_genre_str[ID3v1_GENRE_MAX + 1] = {
     [0] = "Blues",
     [1] = "Classic Rock",
     [2] = "Country",