diff --git a/Tone/component/LFO.js b/Tone/component/LFO.js
index e03883f1..f50ed701 100644
--- a/Tone/component/LFO.js
+++ b/Tone/component/LFO.js
@@ -208,6 +208,7 @@ function(Tone){
 		this._a2g.dispose();
 		this._a2g = null;
 		this.frequency = null;
+		this.amplitude = null;
 		return this;
 	};
 
diff --git a/Tone/effect/AutoPanner.js b/Tone/effect/AutoPanner.js
index f630fde0..90b023ed 100644
--- a/Tone/effect/AutoPanner.js
+++ b/Tone/effect/AutoPanner.js
@@ -127,6 +127,7 @@ define(["Tone/core/Tone", "Tone/effect/Effect", "Tone/component/LFO", "Tone/comp
 		this._panner.dispose();
 		this._panner = null;
 		this.frequency = null;
+		this.amount = null;
 		return this;
 	};