diff --git a/tests/test_macos.py b/tests/test_macos.py
index cc7a579..f6d9255 100644
--- a/tests/test_macos.py
+++ b/tests/test_macos.py
@@ -62,8 +62,8 @@ def test_macos_video_hwa_sendonly(setup, video_codec_type):
 @pytest.mark.parametrize(
     ("video_codec_type", "expected_implementation"),
     [
-        ("H264", "SimulcastEncoderAdapter (VideoToolbox)"),
-        ("H265", "SimulcastEncoderAdapter (VideoToolbox)"),
+        ("H264", "SimulcastEncoderAdapter (VideoToolbox, VideoToolbox)"),
+        ("H265", "SimulcastEncoderAdapter (VideoToolbox, VideoToolbox)"),
     ],
 )
 def test_macos_simulcast(setup, video_codec_type, expected_implementation):
diff --git a/tests/test_openh264.py b/tests/test_openh264.py
index 752acef..594e9dc 100644
--- a/tests/test_openh264.py
+++ b/tests/test_openh264.py
@@ -72,7 +72,7 @@ def test_openh264_sendonly_recvonly(setup):
 @pytest.mark.parametrize(
     "video_codec_type,expected_implementation",
     [
-        ("H264", "SimulcastEncoderAdapter (OpenH264)"),
+        ("H264", "SimulcastEncoderAdapter (OpenH264, OpenH264)"),
     ],
 )
 def test_openh264_simulcast(setup, video_codec_type, expected_implementation):
diff --git a/tests/test_simulcast.py b/tests/test_simulcast.py
index e41862d..27ebfdb 100644
--- a/tests/test_simulcast.py
+++ b/tests/test_simulcast.py
@@ -10,7 +10,7 @@
     ("video_codec_type", "expected_implementation"),
     [
         ("VP8", "SimulcastEncoderAdapter (libvpx)"),
-        ("VP9", "SimulcastEncoderAdapter (libvpx)"),
+        ("VP9", "SimulcastEncoderAdapter (libvpx, libvpx, libvpx)"),
         ("AV1", "SimulcastEncoderAdapter (libaom)"),
     ],
 )
@@ -65,4 +65,3 @@ def test_simulcast(setup, video_codec_type, expected_implementation):
         assert rtp_stat["encoderImplementation"] == expected_implementation
         assert rtp_stat["bytesSent"] > 0
         assert rtp_stat["packetsSent"] > 0
-