diff --git a/interface/resources/shaders/face.frag b/interface/resources/shaders/face.frag
index 847f1162f1..dbabc1250c 100644
--- a/interface/resources/shaders/face.frag
+++ b/interface/resources/shaders/face.frag
@@ -1,10 +1,10 @@
 #version 120
 
 //
-//  iris.frag
+//  face.frag
 //  fragment shader
 //
-//  Created by Andrzej Kapolka on 6/13/13.
+//  Created by Andrzej Kapolka on 7/12/13.
 //  Copyright (c) 2013 High Fidelity, Inc. All rights reserved.
 //
 
@@ -12,6 +12,6 @@
 uniform sampler2D colorTexture;
 
 void main(void) {
-    // modulate texture by diffuse color and add specular contribution
+    // for now, just modulate color
     gl_FragColor = gl_Color * texture2D(colorTexture, gl_TexCoord[0].st);
 }
diff --git a/interface/resources/shaders/face.vert b/interface/resources/shaders/face.vert
index fa848909c2..704bf77961 100644
--- a/interface/resources/shaders/face.vert
+++ b/interface/resources/shaders/face.vert
@@ -24,6 +24,7 @@ void main(void) {
     gl_TexCoord[0] = vec4(texCoordCorner + gl_Vertex.x * texCoordRight + gl_Vertex.y * texCoordUp, 0.0, 1.0);
     float depth = texture2D(depthTexture, gl_TexCoord[0].st).r;
     
+    // set alpha to zero for invalid depth values
     const float MIN_VISIBLE_DEPTH = 1.0 / 255.0;
     const float MAX_VISIBLE_DEPTH = 254.0 / 255.0;
     gl_FrontColor = vec4(1.0, 1.0, 1.0, step(MIN_VISIBLE_DEPTH, depth) * (1.0 - step(MAX_VISIBLE_DEPTH, depth)));
diff --git a/interface/src/avatar/Face.cpp b/interface/src/avatar/Face.cpp
index 64b0ed7bda..2e462d2cea 100644
--- a/interface/src/avatar/Face.cpp
+++ b/interface/src/avatar/Face.cpp
@@ -84,7 +84,7 @@ int Face::processVideoMessage(unsigned char* packetData, size_t dataBytes) {
     
     if ((_frameBytesRemaining -= payloadSize) <= 0) {
         float aspectRatio = *(const float*)_arrivingFrame.constData();
-        int result = vpx_codec_decode(&_codec, (const uint8_t*)_arrivingFrame.constData() + sizeof(float),
+        vpx_codec_decode(&_codec, (const uint8_t*)_arrivingFrame.constData() + sizeof(float),
             _arrivingFrame.size() - sizeof(float), 0, 0);
         vpx_codec_iter_t iterator = 0;
         vpx_image_t* image;