diff --git a/interface/src/Head.cpp b/interface/src/Head.cpp
index 6f7f330010..65d6c71860 100644
--- a/interface/src/Head.cpp
+++ b/interface/src/Head.cpp
@@ -354,7 +354,9 @@ void Head::renderMouth() {
     glm::vec3 rightBottom = _mouthPosition + r * 0.4f - u * 1.0f + f * 0.7f;
     
     // constrain all mouth vertices to a sphere slightly larger than the head...
-    float constrainedRadius = _scale + 0.001f;
+    const float MOUTH_OFFSET_OFF_FACE = 0.003f;
+    
+    float constrainedRadius = _scale + MOUTH_OFFSET_OFF_FACE;
     middle      = _position + glm::normalize(middle      - _position) * constrainedRadius;
     leftCorner  = _position + glm::normalize(leftCorner  - _position) * constrainedRadius;
     rightCorner = _position + glm::normalize(rightCorner - _position) * constrainedRadius;