diff --git a/src/Avalonia.Styling/Styling/StyleInstance.cs b/src/Avalonia.Styling/Styling/StyleInstance.cs
index c48690e96e..8ca31d654f 100644
--- a/src/Avalonia.Styling/Styling/StyleInstance.cs
+++ b/src/Avalonia.Styling/Styling/StyleInstance.cs
@@ -46,7 +46,7 @@ namespace Avalonia.Styling
             {
                 var animationsCount = animations.Count;
 
-                _animations = new List<IDisposable>();
+                _animations = new List<IDisposable>(animationsCount);
                 _animationTrigger = new Subject<bool>();
 
                 for (var i = 0; i < animationsCount; ++i)