diff --git a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CArgumentsTab.java b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CArgumentsTab.java
index eacc9c93d79..f309b35e9f3 100644
--- a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CArgumentsTab.java
+++ b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CArgumentsTab.java
@@ -109,7 +109,7 @@ public class CArgumentsTab extends CLaunchConfigurationTab {
 			}
 			
 		});
-//		addControlAccessibleListener(fArgumentVariablesButton, fArgumentVariablesButton.getText()); // need to strip the mnemonic from buttons
+		addControlAccessibleListener(fArgumentVariablesButton, fArgumentVariablesButton.getText()); // need to strip the mnemonic from buttons
 	}
 
 	/**
@@ -133,6 +133,7 @@ public class CArgumentsTab extends CLaunchConfigurationTab {
 		dialog.open();
 		return dialog.getVariableExpression();
 	}
+	
 	public void addControlAccessibleListener(Control control, String controlName) {
 		//strip mnemonic (&)
 		String[] strs = controlName.split("&"); //$NON-NLS-1$