diff --git a/swing/src/net/sf/openrocket/gui/main/SimulationPanel.java b/swing/src/net/sf/openrocket/gui/main/SimulationPanel.java
index 15f775d3b..19fd89b93 100644
--- a/swing/src/net/sf/openrocket/gui/main/SimulationPanel.java
+++ b/swing/src/net/sf/openrocket/gui/main/SimulationPanel.java
@@ -15,7 +15,6 @@ import java.awt.event.KeyEvent;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
 import java.io.IOException;
-import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Comparator;