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-rw-r--r--src/demos/vertexProgRefract/VertexProgRefract.java1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/demos/vertexProgRefract/VertexProgRefract.java b/src/demos/vertexProgRefract/VertexProgRefract.java
index 8c1e867..e3b4ab5 100644
--- a/src/demos/vertexProgRefract/VertexProgRefract.java
+++ b/src/demos/vertexProgRefract/VertexProgRefract.java
@@ -454,6 +454,7 @@ public class VertexProgRefract extends Demo {
//
public void shutdownDemo() {
ManipManager.getManipManager().unregisterWindow(drawable);
+ drawable.removeGLEventListener(this);
super.shutdownDemo();
}