diff --git a/Core/DiffTools.cs b/Core/DiffTools.cs
index 2584d7b..e2d68af 100644
--- a/Core/DiffTools.cs
+++ b/Core/DiffTools.cs
@@ -205,7 +205,7 @@ namespace ScrewTurn.Wiki {
 					s = s.Trim();
 
 				if(ignoreSpace) {
-					s = Regex.Replace(s, "\\s+", " ");            // TODO: optimization: faster blank removal.
+					s = Regex.Replace(s, "\\s+", " ");
 				}
 
 				if(ignoreCase)