diff --git a/lib/ace/mode/folding/velocity.js b/lib/ace/mode/folding/velocity.js
index 4a529090..ce235b49 100644
--- a/lib/ace/mode/folding/velocity.js
+++ b/lib/ace/mode/folding/velocity.js
@@ -63,7 +63,7 @@ oop.inherits(FoldMode, BaseFoldMode);
             if (level == -1)
                 continue;
 
-            if (line[level] != "#")
+            if (line[level] != "##")
                 break;
 
             endRow = row;
@@ -91,12 +91,12 @@ oop.inherits(FoldMode, BaseFoldMode);
 
         // documentation comments
         if (prevIndent == -1) {
-            if (indent == nextIndent && line[indent] == "#" && next[indent] == "#") {
+            if (indent == nextIndent && line[indent] == "##" && next[indent] == "##") {
                 session.foldWidgets[row - 1] = "";
                 session.foldWidgets[row + 1] = "";
                 return "start";
             }
-        } else if (prevIndent == indent && line[indent] == "#" && prev[indent] == "#") {
+        } else if (prevIndent == indent && line[indent] == "##" && prev[indent] == "##") {
             if (session.getLine(row - 2).search(/\S/) == -1) {
                 session.foldWidgets[row - 1] = "start";
                 session.foldWidgets[row + 1] = "";