diff --git a/Assets/VRM10/Runtime/Components/Vrm10Runtime/Vrm10RuntimeExpression.cs b/Assets/VRM10/Runtime/Components/Vrm10Runtime/Vrm10RuntimeExpression.cs
index 1a4f747ce..62603029d 100644
--- a/Assets/VRM10/Runtime/Components/Vrm10Runtime/Vrm10RuntimeExpression.cs
+++ b/Assets/VRM10/Runtime/Components/Vrm10Runtime/Vrm10RuntimeExpression.cs
@@ -56,6 +56,9 @@ namespace UniVRM10
 
             _eyeDirectionApplicable?.Restore();
             _eyeDirectionApplicable = null;
+            
+            _merger?.Dispose();
+            _merger = null;
         }
 
         internal void Process(LookAtEyeDirection inputEyeDirection)