1 files changed, 1 insertions, 1 deletions
diff --git a/Source/JavaScriptCore/runtime/PropertyNameArray.cpp b/Source/JavaScriptCore/runtime/PropertyNameArray.cpp
index 8efb4065e..9bae94097 100644
--- a/Source/JavaScriptCore/runtime/PropertyNameArray.cpp
+++ b/Source/JavaScriptCore/runtime/PropertyNameArray.cpp
@@ -45,7 +45,7 @@ void PropertyNameArray::add(StringImpl* identifier)
             for (size_t i = 0; i < size; ++i)
                 m_set.add(m_data->propertyNameVector()[i].impl());
         }
-        if (!m_set.add(identifier).second)
+        if (!m_set.add(identifier).isNewEntry)
             return;
     }