diff --git a/src/main/java/de/neemann/digital/draw/graphics/GraphicsImage.java b/src/main/java/de/neemann/digital/draw/graphics/GraphicsImage.java
index 3f00b75a1..3052140bc 100644
--- a/src/main/java/de/neemann/digital/draw/graphics/GraphicsImage.java
+++ b/src/main/java/de/neemann/digital/draw/graphics/GraphicsImage.java
@@ -57,8 +57,10 @@ public final class GraphicsImage extends GraphicSwing implements Closeable {
 
     @Override
     public void close() throws IOException {
-        if (out != null)
+        if (out != null) {
             ImageIO.write(bi, format, out);
+            out.close();
+        }
     }
 
     /**