diff --git a/plugins/org.eclipse.dd.dsf.debug.ui/src/org/eclipse/dd/dsf/debug/internal/provisional/ui/viewmodel/expression/WatchExpressionCellModifier.java b/plugins/org.eclipse.dd.dsf.debug.ui/src/org/eclipse/dd/dsf/debug/internal/provisional/ui/viewmodel/expression/WatchExpressionCellModifier.java
index 04c4dbbb1de..3c47d047e1e 100644
--- a/plugins/org.eclipse.dd.dsf.debug.ui/src/org/eclipse/dd/dsf/debug/internal/provisional/ui/viewmodel/expression/WatchExpressionCellModifier.java
+++ b/plugins/org.eclipse.dd.dsf.debug.ui/src/org/eclipse/dd/dsf/debug/internal/provisional/ui/viewmodel/expression/WatchExpressionCellModifier.java
@@ -61,6 +61,7 @@ public class WatchExpressionCellModifier implements ICellModifier {
             if (strValue.length() != 0) {
                 expression.setExpressionText(strValue);
             } else {
+                // (bug 233111) If user entered a blank string, remove the expression.
                 expressionManager.removeExpression(expression);
             }
         } else if (element instanceof NewExpressionVMC && strValue.length() != 0) {