diff --git a/Timelapse/PictureBox.cs b/Timelapse/PictureBox.cs
index 19dbb32..78b46c7 100644
--- a/Timelapse/PictureBox.cs
+++ b/Timelapse/PictureBox.cs
@@ -34,6 +34,10 @@ public class PictureBox : Panel
     public void SetImage(Image<Rgb24> image)
     {
         lockObj.Lock(()=>{
+            if(img != null)
+            {
+                img.Dispose();
+            }
         img=image;
          if(img !=null)
         {