1 files changed, 2 insertions, 1 deletions
diff --git a/absl/strings/internal/cord_rep_btree_navigator.cc b/absl/strings/internal/cord_rep_btree_navigator.cc
index 19afbe90..9b896a3d 100644
--- a/absl/strings/internal/cord_rep_btree_navigator.cc
+++ b/absl/strings/internal/cord_rep_btree_navigator.cc
@@ -16,6 +16,7 @@
 
 #include <cassert>
 
+#include "absl/strings/internal/cord_data_edge.h"
 #include "absl/strings/internal/cord_internal.h"
 #include "absl/strings/internal/cord_rep_btree.h"
 
@@ -39,7 +40,7 @@ inline CordRep* Substring(CordRep* rep, size_t offset, size_t n) {
   assert(n <= rep->length);
   assert(offset < rep->length);
   assert(offset <= rep->length - n);
-  assert(CordRepBtree::IsDataEdge(rep));
+  assert(IsDataEdge(rep));
 
   if (n == 0) return nullptr;
   if (n == rep->length) return CordRep::Ref(rep);