diff --git a/swing/src/net/sf/openrocket/gui/main/BasicFrame.java b/swing/src/net/sf/openrocket/gui/main/BasicFrame.java
index 0b754ef7e..18db61569 100644
--- a/swing/src/net/sf/openrocket/gui/main/BasicFrame.java
+++ b/swing/src/net/sf/openrocket/gui/main/BasicFrame.java
@@ -266,7 +266,7 @@ public class BasicFrame extends JFrame {
 		
 		//  Upper-left segment, component tree
 		
-		JPanel panel = new JPanel(new MigLayout("fill, flowy", "", "[grow]"));
+		JPanel panel = new JPanel(new MigLayout("fill, flowy", "[grow][grow 0]","[grow]"));
 		
 		tree = new ComponentTree(document);
 		tree.setSelectionModel(componentSelectionModel);