diff --git a/libraries/physics/src/PhysicsEngine.h b/libraries/physics/src/PhysicsEngine.h
index 1161b89f2c..0ca9b2aca8 100644
--- a/libraries/physics/src/PhysicsEngine.h
+++ b/libraries/physics/src/PhysicsEngine.h
@@ -115,7 +115,6 @@ private:
 
     ContactMap _contactMap;
     uint32_t _numContactFrames = 0;
-    uint32_t _lastNumSubstepsAtUpdateInternal = 0;
 
     /// character collisions
     CharacterController* _myAvatarController;