diff --git a/frontend/html5.html b/frontend/html5.html
index d090db5..3d4910e 100644
--- a/frontend/html5.html
+++ b/frontend/html5.html
@@ -46,7 +46,7 @@
 <address></address>                               <!-- Used to display contact information -->
 <code></code>                                     <!-- Used to display inline code snippets -->
 <q></q>                                           <!-- Defines a short inline quotation -->
-<sub></sub>                                       <!-- 	Defines subscripted text -->
+<sub></sub>                                       <!-- Defines subscripted text -->
 <sup></sup>                                       <!-- Defines superscripted text -->
 <kbd></kbd>                                       <!-- Specifies text as keyboard input -->
 <small></small>                                   <!-- Specifies small text -->