diff --git a/assignment-client/src/avatars/AvatarMixerSlave.cpp b/assignment-client/src/avatars/AvatarMixerSlave.cpp
index 9b501a5e31..0004afa97c 100644
--- a/assignment-client/src/avatars/AvatarMixerSlave.cpp
+++ b/assignment-client/src/avatars/AvatarMixerSlave.cpp
@@ -217,6 +217,11 @@ void AvatarMixerSlave::broadcastAvatarData(const SharedNodePointer& node) {
                     return 0;
                 },
 
+                [&](AvatarSharedPointer avatar)->float{
+                    glm::vec3 nodeBoxHalfScale = (avatar->getPosition() - avatar->getGlobalBoundingBoxCorner());
+                    return glm::max(nodeBoxHalfScale.x, glm::max(nodeBoxHalfScale.y, nodeBoxHalfScale.z));
+                },
+
                 [thisAvatar](AvatarSharedPointer avatar)->bool{
                     return (avatar == thisAvatar); // ignore ourselves...
                 });
diff --git a/interface/src/avatar/AvatarManager.cpp b/interface/src/avatar/AvatarManager.cpp
index af9f915fec..b1a09b46ce 100644
--- a/interface/src/avatar/AvatarManager.cpp
+++ b/interface/src/avatar/AvatarManager.cpp
@@ -171,6 +171,10 @@ void AvatarManager::updateOtherAvatars(float deltaTime) {
             return std::static_pointer_cast<Avatar>(avatar)->getLastRenderUpdateTime();
         },
 
+        [](AvatarSharedPointer avatar)->float{
+            return std::static_pointer_cast<Avatar>(avatar)->getBoundingRadius();
+        },
+
         [this](AvatarSharedPointer avatar)->bool{
             const auto& castedAvatar = std::static_pointer_cast<Avatar>(avatar);
             if (castedAvatar == _myAvatar || !castedAvatar->isInitialized()) {
diff --git a/libraries/avatars/src/AvatarData.cpp b/libraries/avatars/src/AvatarData.cpp
index e2574683a2..0c145a6a30 100644
--- a/libraries/avatars/src/AvatarData.cpp
+++ b/libraries/avatars/src/AvatarData.cpp
@@ -2319,7 +2319,8 @@ float AvatarData::_avatarSortCoefficientAge { 1.0f };
 std::priority_queue<AvatarPriority> AvatarData::sortAvatars(
     QList<AvatarSharedPointer> avatarList,
     const ViewFrustum& cameraView,
-    std::function<uint64_t(AvatarSharedPointer)> lastUpdated,
+    std::function<uint64_t(AvatarSharedPointer)> getLastUpdated,
+    std::function<float(AvatarSharedPointer)> getBoundingRadius,
     std::function<bool(AvatarSharedPointer)> shouldIgnore) {
 
     uint64_t startTime = usecTimestampNow();
@@ -2346,12 +2347,12 @@ std::priority_queue<AvatarPriority> AvatarData::sortAvatars(
             float distance = glm::length(offset) + 0.001f; // add 1mm to avoid divide by zero
 
             // FIXME - AvatarData has something equivolent to this
-            float radius = 1.0f; // avatar->getBoundingRadius();
+            float radius = getBoundingRadius(avatar);
 
             const glm::vec3& forward = cameraView.getDirection();
             float apparentSize = 2.0f * radius / distance;
             float cosineAngle = glm::length(glm::dot(offset, forward) * forward) / distance;
-            float age = (float)(startTime - lastUpdated(avatar)) / (float)(USECS_PER_SECOND);
+            float age = (float)(startTime - getLastUpdated(avatar)) / (float)(USECS_PER_SECOND);
 
             // NOTE: we are adding values of different units to get a single measure of "priority".
             // Thus we multiply each component by a conversion "weight" that scales its units relative to the others.
diff --git a/libraries/avatars/src/AvatarData.h b/libraries/avatars/src/AvatarData.h
index 8608137b20..0eddc29cda 100644
--- a/libraries/avatars/src/AvatarData.h
+++ b/libraries/avatars/src/AvatarData.h
@@ -597,7 +597,8 @@ public:
     static std::priority_queue<AvatarPriority> sortAvatars(
         QList<AvatarSharedPointer> avatarList,
         const ViewFrustum& cameraView,
-        std::function<uint64_t(AvatarSharedPointer)> lastUpdated,
+        std::function<uint64_t(AvatarSharedPointer)> getLastUpdated,
+        std::function<float(AvatarSharedPointer)> getBoundingRadius,
         std::function<bool(AvatarSharedPointer)> shouldIgnore);
 
     // TODO: remove this HACK once we settle on optimal sort coefficients