diff --git a/core/src/net/sf/openrocket/gui/main/SimulationPanel.java b/core/src/net/sf/openrocket/gui/main/SimulationPanel.java
index 37df70c91..9b34c547b 100644
--- a/core/src/net/sf/openrocket/gui/main/SimulationPanel.java
+++ b/core/src/net/sf/openrocket/gui/main/SimulationPanel.java
@@ -23,9 +23,6 @@ import javax.swing.ListSelectionModel;
 import javax.swing.SwingUtilities;
 import javax.swing.table.DefaultTableCellRenderer;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 import net.miginfocom.swing.MigLayout;
 import net.sf.openrocket.aerodynamics.Warning;
 import net.sf.openrocket.aerodynamics.WarningSet;
@@ -48,6 +45,9 @@ import net.sf.openrocket.startup.Application;
 import net.sf.openrocket.startup.Preferences;
 import net.sf.openrocket.unit.UnitGroup;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 public class SimulationPanel extends JPanel {
 	private static final Logger log = LoggerFactory.getLogger(SimulationPanel.class);
 	private static final Translator trans = Application.getTranslator();
@@ -130,9 +130,11 @@ public class SimulationPanel extends JPanel {
 			@Override
 			public void actionPerformed(ActionEvent e) {
 				int[] selection = simulationTable.getSelectedRows();
-				if (selection.length == 0)
-					return; // TODO: LOW: "None selected" dialog
-					
+				if (selection.length == 0) {
+					JOptionPane.showMessageDialog(simulationTable, "No simulations selected.");
+					return;
+				}
+				
 				Simulation[] sims = new Simulation[selection.length];
 				for (int i = 0; i < selection.length; i++) {
 					selection[i] = simulationTable.convertRowIndexToModel(selection[i]);
@@ -512,7 +514,6 @@ public class SimulationPanel extends JPanel {
 		
 	}
 	
-	
 	public ListSelectionModel getSimulationListSelectionModel() {
 		return simulationTable.getSelectionModel();
 	}