diff --git a/prism/src/userinterface/graph/GUIImageExportDialog.java b/prism/src/userinterface/graph/GUIImageExportDialog.java
index b97b77f4..95a3a023 100644
--- a/prism/src/userinterface/graph/GUIImageExportDialog.java
+++ b/prism/src/userinterface/graph/GUIImageExportDialog.java
@@ -95,7 +95,7 @@ public class GUIImageExportDialog extends JDialog implements DocumentListener
 		
 		this.imageTypeInputField.setSelectedIndex(defaultImageType);
 		
-		this.alphaInputField.setSelected(defaultImageType == PNG);
+		this.alphaInputField.setSelected(false);
 		this.alphaInputField.setEnabled(defaultImageType == PNG);
 		this.alphaInputLabel.setEnabled(defaultImageType == PNG);