diff --git a/talk/media/webrtc/fakewebrtcvideoengine.h b/talk/media/webrtc/fakewebrtcvideoengine.h
index 73d9c3553c..ca3ed86fd1 100644
--- a/talk/media/webrtc/fakewebrtcvideoengine.h
+++ b/talk/media/webrtc/fakewebrtcvideoengine.h
@@ -1264,7 +1264,7 @@ class FakeWebRtcVideoEngine
     return 0;
   }
   WEBRTC_FUNC(RegisterExternalReceiveCodec,
-      (const int channel, const unsigned int pl_type, webrtc::VideoDecoder*,
+      (const int channel, const unsigned char pl_type, webrtc::VideoDecoder*,
        bool, int)) {
     WEBRTC_CHECK_CHANNEL(channel);
     channels_[channel]->ext_decoder_pl_types_.insert(pl_type);
diff --git a/webrtc/video_engine/include/vie_external_codec.h b/webrtc/video_engine/include/vie_external_codec.h
index 536995ee0a..99018dbcd2 100644
--- a/webrtc/video_engine/include/vie_external_codec.h
+++ b/webrtc/video_engine/include/vie_external_codec.h
@@ -34,7 +34,7 @@ class WEBRTC_DLLEXPORT ViEExternalCodec {
                                           const unsigned char pl_type) = 0;
 
   virtual int RegisterExternalReceiveCodec(const int video_channel,
-                                           const unsigned int pl_type,
+                                           const unsigned char pl_type,
                                            VideoDecoder* decoder,
                                            bool decoder_render = false,
                                            int render_delay = 0) = 0;
diff --git a/webrtc/video_engine/vie_external_codec_impl.cc b/webrtc/video_engine/vie_external_codec_impl.cc
index 39a2e63ee9..1be2d31618 100644
--- a/webrtc/video_engine/vie_external_codec_impl.cc
+++ b/webrtc/video_engine/vie_external_codec_impl.cc
@@ -99,7 +99,7 @@ int ViEExternalCodecImpl::DeRegisterExternalSendCodec(
 
 int ViEExternalCodecImpl::RegisterExternalReceiveCodec(
     const int video_channel,
-    const unsigned int pl_type,
+    const unsigned char pl_type,
     VideoDecoder* decoder,
     bool decoder_render,
     int render_delay) {
diff --git a/webrtc/video_engine/vie_external_codec_impl.h b/webrtc/video_engine/vie_external_codec_impl.h
index 7c8f4a20fd..da5a445ddf 100644
--- a/webrtc/video_engine/vie_external_codec_impl.h
+++ b/webrtc/video_engine/vie_external_codec_impl.h
@@ -31,7 +31,7 @@ class ViEExternalCodecImpl
   virtual int DeRegisterExternalSendCodec(const int video_channel,
                                           const unsigned char pl_type);
   virtual int RegisterExternalReceiveCodec(const int video_channel,
-                                           const unsigned int pl_type,
+                                           const unsigned char pl_type,
                                            VideoDecoder* decoder,
                                            bool decoder_render = false,
                                            int render_delay = 0);