diff --git a/lib/ace/edit_session/folding.js b/lib/ace/edit_session/folding.js
index 6886118b..e6725a51 100644
--- a/lib/ace/edit_session/folding.js
+++ b/lib/ace/edit_session/folding.js
@@ -285,7 +285,7 @@ function Folding() {
 
         // --- Some checking ---
         if (!(startRow < endRow || 
-            startRow == endRow && startColumn < endColumn - 2))
+            startRow == endRow && startColumn <= endColumn - 2))
             throw new Error("The range has to be at least 2 characters width");
 
         var startFold = this.getFoldAt(startRow, startColumn, 1);