diff --git a/launch/org.eclipse.cdt.launch/ChangeLog b/launch/org.eclipse.cdt.launch/ChangeLog
index 35dc9361c4f..f0e26e97b66 100644
--- a/launch/org.eclipse.cdt.launch/ChangeLog
+++ b/launch/org.eclipse.cdt.launch/ChangeLog
@@ -1,3 +1,7 @@
+2003-11-22 Mikhail Khodjaiants
+	src/org/eclipse/cdt/launch/ui/CSourceLookupTab.java: 
+	Dispose 'SourceLookupBlock' when disposing 'CSourceLookupTab'.
+
 2003-11-17 Mikhail Khodjaiants
 	src/org/eclipse/cdt/launch/ui/CSourceLookupTab.java: 
 	"Search for duplicate source files" option support.
diff --git a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CSourceLookupTab.java b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CSourceLookupTab.java
index 8bacb86a1da..30f0cdd2d33 100644
--- a/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CSourceLookupTab.java
+++ b/launch/org.eclipse.cdt.launch/src/org/eclipse/cdt/launch/ui/CSourceLookupTab.java
@@ -155,4 +155,13 @@ public class CSourceLookupTab extends CLaunchConfigurationTab
 		return string == null || string.length() == 0;
 	}
 
+	/* (non-Javadoc)
+	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#dispose()
+	 */
+	public void dispose()
+	{
+		if ( fBlock != null )
+			fBlock.dispose();
+		super.dispose();
+	}
 }