diff --git a/src/de/mpg/molgen/buczek/portifix/Gui.java b/src/de/mpg/molgen/buczek/portifix/Gui.java
index a3c79cd..93312fe 100644
--- a/src/de/mpg/molgen/buczek/portifix/Gui.java
+++ b/src/de/mpg/molgen/buczek/portifix/Gui.java
@@ -29,6 +29,7 @@
 import javax.swing.SwingUtilities;
 import javax.swing.TransferHandler;
 import javax.swing.UIManager;
+import javax.swing.UnsupportedLookAndFeelException;
 import javax.swing.event.ListSelectionEvent;
 import javax.swing.event.ListSelectionListener;
 import javax.swing.table.DefaultTableCellRenderer;
@@ -445,7 +446,7 @@ public static void main(String args[]) throws SQLException {
 
         try {
             UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
-        } catch (Exception e) {
+        } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException e) {
             // if we fail to set the system look and feel, we continue with the default
         }