diff --git a/lib/ruler.js b/lib/ruler.js
index 147bda5..c9b7d06 100644
--- a/lib/ruler.js
+++ b/lib/ruler.js
@@ -208,7 +208,8 @@ Ruler.prototype.getRules = function (chainName) {
     this.__compile__();
   }
 
-  return this.__cache__[chainName];
+  // Chain can be empty, if rules disabled. But we still have to return Array.
+  return this.__cache__[chainName] || [];
 };
 
 module.exports = Ruler;
diff --git a/test/misc.js b/test/misc.js
index 743276e..6f1a4d9 100644
--- a/test/misc.js
+++ b/test/misc.js
@@ -200,7 +200,7 @@ describe('Misc', function () {
     assert.strictEqual(md.render('*b*'), '<par><it>b</it></par>');
   });
 
-  it('zero preset should disable everything', function () {
+  it('Zero preset should disable everything', function () {
     var md = markdownit('zero');
 
     assert.strictEqual(md.render('___foo___'), '<p>___foo___</p>\n');
@@ -212,6 +212,12 @@ describe('Misc', function () {
     assert.strictEqual(md.renderInline('___foo___'), '<strong><em>foo</em></strong>');
   });
 
+  it('Should correctly check block termination rules ahen those are disabled (#13)', function () {
+    var md = markdownit('zero');
+
+    assert.strictEqual(md.render('foo\nbar'), '<p>foo\nbar</p>\n');
+  });
+
 });