diff --git a/core/amber/src/main/scala/edu/uci/ics/texera/workflow/WorkflowCompiler.scala b/core/amber/src/main/scala/edu/uci/ics/texera/workflow/WorkflowCompiler.scala
index 88ad5b7fbb..9144fa63d4 100644
--- a/core/amber/src/main/scala/edu/uci/ics/texera/workflow/WorkflowCompiler.scala
+++ b/core/amber/src/main/scala/edu/uci/ics/texera/workflow/WorkflowCompiler.scala
@@ -68,7 +68,7 @@ class WorkflowCompiler(
             }
           })
 
-        // assign the view results
+        // assign the sinks to toAddSink operators' external output ports
         subPlan
           .topologicalIterator()
           .map(subPlan.getOperator)