diff --git a/mode/asterisk/asterisk.js b/mode/asterisk/asterisk.js
index 025a8b3ef9..a9bd4e3a52 100644
--- a/mode/asterisk/asterisk.js
+++ b/mode/asterisk/asterisk.js
@@ -9,7 +9,7 @@
  *    Description:  CodeMirror mode for Asterisk dialplan
  *
  *        Created:  05/17/2012 09:20:25 PM
- *       Revision:  none
+ *       Revision:  08/05/2019 AstLinux Project: Support block-comments
  *
  *         Author:  Stas Kobzar (stas@modulis.ca),
  *        Company:  Modulis.ca Inc.
@@ -67,7 +67,26 @@ CodeMirror.defineMode("asterisk", function() {
     var cur = '';
     var ch = stream.next();
     // comment
+    if (state.blockComment) {
+      if (ch == "-" && stream.match("-;", true)) {
+        state.blockComment = false;
+      } else if (stream.skipTo("--;")) {
+        stream.next();
+        stream.next();
+        stream.next();
+        state.blockComment = false;
+      } else {
+        stream.skipToEnd();
+      }
+      return "comment";
+    }
     if(ch == ";") {
+      if (stream.match("--", true)) {
+        if (!stream.match("-", false)) {  // Except ;--- is not a block comment
+          state.blockComment = true;
+          return "comment";
+        }
+      }
       stream.skipToEnd();
       return "comment";
     }
@@ -124,6 +143,7 @@ CodeMirror.defineMode("asterisk", function() {
   return {
     startState: function() {
       return {
+        blockComment: false,
         extenStart: false,
         extenSame:  false,
         extenInclude: false,