diff --git a/src/audio/playback/jack.c b/src/audio/playback/jack.c
index 9685201ea..9b2d4be79 100644
--- a/src/audio/playback/jack.c
+++ b/src/audio/playback/jack.c
@@ -247,7 +247,7 @@ static void * audio_play_jack_init(const char *cfg)
 static bool audio_play_jack_query_format(struct state_jack_playback *s, void *data, size_t *len)
 {
         struct audio_desc desc;
-        if (*len <= sizeof desc) {
+        if (*len < sizeof desc) {
                 return false;
         } else {
                 memcpy(&desc, data, sizeof desc);