diff --git a/playlist.c b/playlist.c
index 06c20bbb7f..b1e7c63f5c 100644
--- a/playlist.c
+++ b/playlist.c
@@ -1786,7 +1786,7 @@ static JSON_Parser_HandlerResult JSONObjectMemberHandler(JSON_Parser parser, cha
 }
 
 static void get_old_format_metadata_value(
-      const char *metadata_line, char *value, size_t len)
+      char *metadata_line, char *value, size_t len)
 {
    char *start = NULL;
    char *end   = NULL;