diff --git a/libraries/audio-client/src/AudioClient.cpp b/libraries/audio-client/src/AudioClient.cpp
index 27e70e5f01..43af7afdef 100644
--- a/libraries/audio-client/src/AudioClient.cpp
+++ b/libraries/audio-client/src/AudioClient.cpp
@@ -1702,9 +1702,8 @@ float AudioClient::azimuthForSource(const glm::vec3& relativePosition) {
     if (rotatedSourcePositionLength2 > SOURCE_DISTANCE_THRESHOLD) {
         
         // produce an oriented angle about the y-axis
-        // return glm::orientedAngle(glm::vec3(0.0f, 0.0f, -1.0f), glm::normalize(rotatedSourcePosition), glm::vec3(0.0f, -1.0f, 0.0f));
         glm::vec3 direction = rotatedSourcePosition * (1.0f / fastSqrtf(rotatedSourcePositionLength2));
-		float angle = fastAcosf(glm::clamp(-direction.z, -1.0f, 1.0f));
+		float angle = fastAcosf(glm::clamp(-direction.z, -1.0f, 1.0f)); // UNIT_NEG_Z is "forward"
         return (direction.x < 0.0f) ? -angle : angle;
 
     } else {