diff --git a/lib/markdownlint.js b/lib/markdownlint.js
index ae7a6f56..6b31a674 100644
--- a/lib/markdownlint.js
+++ b/lib/markdownlint.js
@@ -118,7 +118,7 @@ function lintContent(content, config) {
       // Configure rule
       params.options = mergedRules[rule.name];
       var errors = [];
-      rule.func(params, errors);
+      rule.func(params, errors, config);
       // Record any errors
       if (errors.length) {
         errors.sort(numberComparison);
diff --git a/lib/rules.js b/lib/rules.js
index 14ee4c87..3f961751 100644
--- a/lib/rules.js
+++ b/lib/rules.js
@@ -627,13 +627,33 @@ module.exports = [
     "name": "MD033",
     "desc": "Inline HTML",
     "tags": [ "html" ],
-    "func": function MD033(params, errors) {
-      filterTokens(params, "html_block", function forToken(token) {
-        errors.push(token.lineNumber);
-      });
-      forEachInlineChild(params, "html_inline", function forToken(token) {
-        errors.push(token.lineNumber);
+    "func": function MD033(params, errors, config) {
+      // map allowed tags
+      var allowed = {};
+      (config.MD033 || []).forEach(function mapTagName(tagName) {
+        allowed[tagName.toLowerCase()] = true;
       });
+      // expression to extract tag names
+      // (closing tags are coming in from the tokens as well)
+      var tagNamePattern = /<\/?([^ >]+)/ig;
+      function forToken(token) {
+        // abusing replace because we then don't
+        // have to deal with the .lastIndex mess
+        /*eslint-disable max-len */
+        // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/exec#Finding_successive_matches
+        /*eslint-enable max-len */
+        var badHtml = false;
+        token.content.replace(tagNamePattern, function forTagName(m, tagName) {
+          badHtml = badHtml || !allowed[tagName.toLowerCase()];
+          return m;
+        });
+        if (badHtml) {
+          errors.push(token.lineNumber);
+        }
+      }
+
+      filterTokens(params, "html_block", forToken);
+      forEachInlineChild(params, "html_inline", forToken);
     }
   },