diff --git a/svf/lib/Graphs/ConsG.cpp b/svf/lib/Graphs/ConsG.cpp
index 6e856882f..c09e4e733 100644
--- a/svf/lib/Graphs/ConsG.cpp
+++ b/svf/lib/Graphs/ConsG.cpp
@@ -786,7 +786,7 @@ struct DOTGraphTraits<ConstraintGraph*> : public DOTGraphTraits<SVFIR*>
         {
             // print the whole value
             if (!SVFUtil::isa<DummyValVar>(node) && !SVFUtil::isa<DummyObjVar>(node))
-                rawstr << node->getId() << ":" << node->getValue()->toString();
+                rawstr << node->toString();
             else
                 rawstr << node->getId() << ":";