diff --git a/lib/md033.js b/lib/md033.js
index a36870b7..e138e512 100644
--- a/lib/md033.js
+++ b/lib/md033.js
@@ -6,7 +6,7 @@ const { addError, bareUrlRe, forEachLine, unescapeMarkdown } =
   require("../helpers");
 const { lineMetadata } = require("./cache");
 
-const htmlElementRe = /<(([A-Za-z][A-Za-z0-9-]*)(?:[\s/][^>]*)?)>/g;
+const htmlElementRe = /<(([A-Za-z][A-Za-z0-9-]*)(?:\s[^>]*)?)(?:\/>|>)/g;
 const linkDestinationRe = /]\(\s*$/;
 const inlineCodeRe = /^[^`]*(`+[^`]+`+[^`]+)*`+[^`]*$/;
 // See https://spec.commonmark.org/0.29/#autolinks
diff --git a/test/inline_html.md b/test/inline_html.md
index 70a98403..e166e6e4 100644
--- a/test/inline_html.md
+++ b/test/inline_html.md
@@ -21,3 +21,7 @@ Text \` text `<code>` text `<code>` text
 Text \` text `<code>` text \` text `<code>` text
 Text \`\` text `<code>` text
 Text `<code>` text \` text `<code>` text
+
+## Slash in element name
+
+Text **\<base directory>\another\directory\\<slash/directory>** text