diff --git a/include/nlohmann/json_view.hpp b/include/nlohmann/json_view.hpp
index da9cb05be..fc5c8dd56 100644
--- a/include/nlohmann/json_view.hpp
+++ b/include/nlohmann/json_view.hpp
@@ -713,7 +713,7 @@ class basic_json_view
     /// decoded strings); the estimate sizes the output buffer of dump()
     std::size_t source_extent() const noexcept
     {
-        const node* const end = m_doc->tape + m_doc->tape_size;
+        const node* const end = m_doc->nodes + m_doc->node_count;
         if ((m_node->flags & detail::view::node_flags::storage) != 0)
         {
             return m_node->len;
diff --git a/single_include/nlohmann/json_view.hpp b/single_include/nlohmann/json_view.hpp
index f83b1c92d..5968845ca 100644
--- a/single_include/nlohmann/json_view.hpp
+++ b/single_include/nlohmann/json_view.hpp
@@ -4604,7 +4604,7 @@ class basic_json_view
     /// decoded strings); the estimate sizes the output buffer of dump()
     std::size_t source_extent() const noexcept
     {
-        const node* const end = m_doc->tape + m_doc->tape_size;
+        const node* const end = m_doc->nodes + m_doc->node_count;
         if ((m_node->flags & detail::view::node_flags::storage) != 0)
         {
             return m_node->len;