diff --git a/src/rntuple.h b/src/rntuple.h
index 4bd7be4..90e1305 100644
--- a/src/rntuple.h
+++ b/src/rntuple.h
@@ -104,9 +104,9 @@ internal const String8 section_names[] = {
   str8("RNTuple Footer"),
   str8("Page List"),
   str8("Page"),
+  str8("RNTuple Anchor"),
   str8("Free Slot"),
   str8("Other"),
-  str8("RNTuple Anchor"),
 };
 static_assert(countof(section_names) == Sec_COUNT);
 
@@ -140,8 +140,8 @@ struct TKeys_Data {
 
 struct RNTuple_Anchor_Node {
   RNTuple_Anchor_Node *next;
-  ROOT::RNTuple anchor;
   Section section;
+  ROOT::RNTuple anchor;
 };
 
 struct TFile_Data {