diff --git a/src/Workspaces/Core/Portable/Utilities/BKTree.Node.cs b/src/Workspaces/Core/Portable/Utilities/BKTree.Node.cs
index d2bbec8f31b4716b90fa1605c77a628c5ba86cfb..c256ea31c7966f86ede9218c1be824ef6ecbcb02 100644
--- a/src/Workspaces/Core/Portable/Utilities/BKTree.Node.cs
+++ b/src/Workspaces/Core/Portable/Utilities/BKTree.Node.cs
@@ -11,8 +11,8 @@ internal partial class BKTree
     {
         private struct Node
         {
-            // The string this node corresponds to.  Stored in char[] format so we can easily compute
-            // edit distances on it.
+            // The string this node corresponds to.  Specifically, this span is the range of
+            // _allLowerCaseCharacters for that string.
             public readonly TextSpan CharacterSpan;
 
             // How many children/edges this node has.