diff --git a/client/garageserver.io.js b/client/garageserver.io.js
index 2f5d0d4..b835bd8 100644
--- a/client/garageserver.io.js
+++ b/client/garageserver.io.js
@@ -7,7 +7,7 @@ options = {
     onPlayerRemove: function (id),
     onPing: function (data),
     onUpdatePlayerPhysics: function (state, inputs),
-    onInterpolation: function(currentState, previousState, targetState, amount, delta)
+    onInterpolation: function(currentState, previousState, targetState, amount)
     logging: true,
     clientSidePrediction: true,
     interpolation: true,