diff --git a/main/codec_builtin.c b/main/codec_builtin.c
index 4be635e1b5..f86a8dfc89 100644
--- a/main/codec_builtin.c
+++ b/main/codec_builtin.c
@@ -594,7 +594,7 @@ static struct ast_codec ilbc = {
 	.type = AST_MEDIA_TYPE_AUDIO,
 	.sample_rate = 8000,
 	.minimum_ms = 30,
-	.maximum_ms = 30,
+	.maximum_ms = 300,
 	.default_ms = 30,
 	.minimum_bytes = 50,
 	.samples_count = ilbc_samples,