diff --git a/src/ui/CriterionPanel.java b/src/ui/CriterionPanel.java
index 9ece7d7..d0ec786 100644
--- a/src/ui/CriterionPanel.java
+++ b/src/ui/CriterionPanel.java
@@ -6,8 +6,11 @@
 import java.awt.GridBagConstraints;
 import java.awt.GridBagLayout;
 import java.awt.Insets;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
 import java.awt.event.FocusAdapter;
 import java.awt.event.FocusEvent;
+import javax.swing.JButton;
 import javax.swing.JLabel;
 import javax.swing.JPanel;
 import javax.swing.JScrollPane;
@@ -24,6 +27,7 @@
 	private final RadioGroup radioGroup;
 	private final JTextArea txtComment;
 	private final Criterion criterion;
+	private final JButton clearBtn;
 
 	private static Dimension selectedSize;
 
@@ -36,24 +40,32 @@
 		GridBagConstraints gbc = new GridBagConstraints();
 		gbc.gridx = 0;
 		gbc.gridy = 0;
-		gbc.gridwidth = 2;
+		gbc.gridwidth = 3;
 		gbc.weightx = 1;
 		gbc.fill = GridBagConstraints.HORIZONTAL;
 		gbc.insets = new Insets(0, 0, 5, 0);
 
 		this.add(new JLabel(criterion.getDescription()), gbc);
 
-		// radio group is left aligned, but doesn't grow
+		// clear mark buttonleft aligned, but doesn't grow
 		gbc = new GridBagConstraints();
 		gbc.gridx = 0;
 		gbc.gridy = 1;
+		clearBtn = new JButton("X");
+
+		this.add(clearBtn, gbc);
+
+		// radio group is left aligned, but doesn't grow
+		gbc = new GridBagConstraints();
+		gbc.gridx = 1;
+		gbc.gridy = 1;
 		radioGroup = new RadioGroup(criterion.getMin(), criterion.getMax());
 
 		this.add(radioGroup, gbc);
 
 		// text area is right aligned, but grows in both directions
 		gbc = new GridBagConstraints();
-		gbc.gridx = 1;
+		gbc.gridx = 2;
 		gbc.gridy = 1;
 		gbc.weightx = 1;
 		gbc.weighty = 1;
@@ -99,6 +111,13 @@
 
 		});
 
+		clearBtn.addActionListener(new ActionListener() {
+			@Override
+			public void actionPerformed(ActionEvent ae) {
+				radioGroup.clearSelection();
+			}
+		});
+
 		Font font = txtComment.getFont();
 		Font biggerFont = font.deriveFont(14f);
 		txtComment.setFont(biggerFont);
@@ -145,4 +164,3 @@
 	}
 
 }
-