diff --git a/fftools/ffplay_renderer.c b/fftools/ffplay_renderer.c
index a57e4980eb..45ca84fa95 100644
--- a/fftools/ffplay_renderer.c
+++ b/fftools/ffplay_renderer.c
@@ -133,7 +133,7 @@ static const char *optional_device_exts[] = {
     "VK_MESA_video_decode_av1",
 };
 
-static inline int enable_debug(AVDictionary *opt)
+static inline int enable_debug(const AVDictionary *opt)
 {
     AVDictionaryEntry *entry = av_dict_get(opt, "debug", NULL, 0);
     int debug = entry && strtol(entry->value, NULL, 10);