diff --git a/src/hotspot/share/services/diagnosticCommand.cpp b/src/hotspot/share/services/diagnosticCommand.cpp
index faabe74a2ff0b..4b8eae8a4138e 100644
--- a/src/hotspot/share/services/diagnosticCommand.cpp
+++ b/src/hotspot/share/services/diagnosticCommand.cpp
@@ -992,7 +992,7 @@ class VM_PrintClasses : public VM_Operation {
 };
 
 void ClassesDCmd::execute(DCmdSource source, TRAPS) {
-  VM_PrintClasses vmop(output(), _verbose.is_set());
+  VM_PrintClasses vmop(output(), _verbose.value());
   VMThread::execute(&vmop);
 }