diff --git a/speaker-test/speaker-test.c b/speaker-test/speaker-test.c
index 0cdecb3..773af0a 100644
--- a/speaker-test/speaker-test.c
+++ b/speaker-test/speaker-test.c
@@ -1034,7 +1034,7 @@ int main(int argc, char *argv[]) {
     case 'r':
       rate = atoi(optarg);
       rate = rate < 4000 ? 4000 : rate;
-      rate = rate > 384000 ? 384000 : rate;
+      rate = rate > 768000 ? 768000 : rate;
       break;
     case 'c':
       channels = atoi(optarg);