diff --git a/codec/h264/h264dec/nalunit_test.go b/codec/h264/h264dec/nalunit_test.go
index f3828880..930fd2b3 100644
--- a/codec/h264/h264dec/nalunit_test.go
+++ b/codec/h264/h264dec/nalunit_test.go
@@ -21,7 +21,8 @@ func TestNewMVCExtension(t *testing.T) {
 				"100" + // u(3) temporal_id = 4
 				"1" + // u(1) anchor_pic_flag = true
 				"0" + // u(1) inter_view_flag = false
-				"1", // u(1) reserved_one_bit = 1
+				"1" + // u(1) reserved_one_bit = 1
+				"0 00000000", // Some padding
 			want: MVCExtension{
 				NonIdrFlag:     false,
 				PriorityID:     2,
@@ -63,7 +64,8 @@ func TestNewThreeDAVCExtension(t *testing.T) {
 				"0" + // u(1) non_idr_flag = false
 				"010" + // u(1) temporal_id = 2
 				"1" + // u(1) anchor_pic_flag = true
-				"1", // u(1) inter_view_flag = true
+				"1" + // u(1) inter_view_flag = true
+				"000", // Some padding
 			want: ThreeDAVCExtension{
 				ViewIdx:       16,
 				DepthFlag:     true,