diff --git a/src/V3Task.cpp b/src/V3Task.cpp
index 9639b9964..8fcd972d3 100644
--- a/src/V3Task.cpp
+++ b/src/V3Task.cpp
@@ -1624,6 +1624,7 @@ class TaskVisitor final : public VNVisitor {
         // Create cloned statements
         AstNode* beginp;
         AstCNew* cnewp = nullptr;
+        // getScope() is safe here: TaskStateVisitor stamped all FTask scopes before this pass.
         const bool virtualIfaceCall
             = TaskStateVisitor::isVirtualIfaceMethodCall(nodep)
               && TaskStateVisitor::isIfaceFTaskScope(m_statep->getScope(nodep->taskp()));