diff --git a/core/modules/parsers/wikiparser/rules/codeinline.js b/core/modules/parsers/wikiparser/rules/codeinline.js
index 139f07f08c..048fc051c0 100644
--- a/core/modules/parsers/wikiparser/rules/codeinline.js
+++ b/core/modules/parsers/wikiparser/rules/codeinline.js
@@ -48,9 +48,6 @@ exports.parse = function() {
 		tag: "code",
 		children: [{
 			type: "text",
-			attributes: {
-				class: {type: "string", value: "tc-emphasis tc-code"}
-			},
 			text: text,
 			start: start,
 			end: this.parser.pos
diff --git a/core/modules/parsers/wikiparser/rules/emphasis/bold.js b/core/modules/parsers/wikiparser/rules/emphasis/bold.js
index 473e85d9b3..3799feeb5a 100644
--- a/core/modules/parsers/wikiparser/rules/emphasis/bold.js
+++ b/core/modules/parsers/wikiparser/rules/emphasis/bold.js
@@ -43,9 +43,6 @@ exports.parse = function() {
 	return [{
 		type: "element",
 		tag: "strong",
-		attributes: {
-			class: {type: "string", value: "tc-emphasis tc-strong"}
-		},
 		children: tree
 	}];
 };
diff --git a/core/modules/parsers/wikiparser/rules/emphasis/italic.js b/core/modules/parsers/wikiparser/rules/emphasis/italic.js
index 4e8840433d..3e0744c4da 100644
--- a/core/modules/parsers/wikiparser/rules/emphasis/italic.js
+++ b/core/modules/parsers/wikiparser/rules/emphasis/italic.js
@@ -43,10 +43,6 @@ exports.parse = function() {
 	return [{
 		type: "element",
 		tag: "em",
-		attributes: {
-			class: {type: "string", value: "tc-emphasis tc-italic"}
-		},
-
 		children: tree
 	}];
 };
diff --git a/core/modules/parsers/wikiparser/rules/emphasis/strikethrough.js b/core/modules/parsers/wikiparser/rules/emphasis/strikethrough.js
index 0619b65585..0fb34fc526 100644
--- a/core/modules/parsers/wikiparser/rules/emphasis/strikethrough.js
+++ b/core/modules/parsers/wikiparser/rules/emphasis/strikethrough.js
@@ -43,9 +43,6 @@ exports.parse = function() {
 	return [{
 		type: "element",
 		tag: "strike",
-		attributes: {
-			class: {type: "string", value: "tc-emphasis tc-strike"}
-		},
 		children: tree
 	}];
 };
diff --git a/core/modules/parsers/wikiparser/rules/emphasis/subscript.js b/core/modules/parsers/wikiparser/rules/emphasis/subscript.js
index 7a3e8f8ec9..12be0fbbc4 100644
--- a/core/modules/parsers/wikiparser/rules/emphasis/subscript.js
+++ b/core/modules/parsers/wikiparser/rules/emphasis/subscript.js
@@ -43,9 +43,6 @@ exports.parse = function() {
 	return [{
 		type: "element",
 		tag: "sub",
-		attributes: {
-			class: {type: "string", value: "tc-emphasis tc-sub"}
-		},
 		children: tree
 	}];
 };
diff --git a/core/modules/parsers/wikiparser/rules/emphasis/superscript.js b/core/modules/parsers/wikiparser/rules/emphasis/superscript.js
index ecb8564b9d..5a5330d8c6 100644
--- a/core/modules/parsers/wikiparser/rules/emphasis/superscript.js
+++ b/core/modules/parsers/wikiparser/rules/emphasis/superscript.js
@@ -43,9 +43,6 @@ exports.parse = function() {
 	return [{
 		type: "element",
 		tag: "sup",
-		attributes: {
-			class: {type: "string", value: "tc-emphasis tc-sup"}
-		},
 		children: tree
 	}];
 };
diff --git a/core/modules/parsers/wikiparser/rules/emphasis/underscore.js b/core/modules/parsers/wikiparser/rules/emphasis/underscore.js
index 2b3d680da5..d36bd242d7 100644
--- a/core/modules/parsers/wikiparser/rules/emphasis/underscore.js
+++ b/core/modules/parsers/wikiparser/rules/emphasis/underscore.js
@@ -43,9 +43,6 @@ exports.parse = function() {
 	return [{
 		type: "element",
 		tag: "u",
-		attributes: {
-			class: {type: "string", value: "tc-emphasis tc-underscore"}
-		},
 		children: tree
 	}];
 };
diff --git a/editions/test/tiddlers/tests/data/functions/WikifiedFunctions.tid b/editions/test/tiddlers/tests/data/functions/WikifiedFunctions.tid
index 6ecd60f2a3..36b64e4a3f 100644
--- a/editions/test/tiddlers/tests/data/functions/WikifiedFunctions.tid
+++ b/editions/test/tiddlers/tests/data/functions/WikifiedFunctions.tid
@@ -33,4 +33,4 @@ $param$ with a ''buffalo''
 +
 title: ExpectedResult
 
-<p>Going to lunch with a ''buffalo''</p><p>Going to breakfastwith a<strong class="tc-emphasis tc-strong">buffalo</strong></p><p>Going to dinner with a <strong class="tc-emphasis tc-strong">buffalo</strong></p>Going to lunch with a ''buffalo''Going to breakfastwith abuffaloGoing to dinner with a buffalo
\ No newline at end of file
+<p>Going to lunch with a ''buffalo''</p><p>Going to breakfastwith a<strong>buffalo</strong></p><p>Going to dinner with a <strong>buffalo</strong></p>Going to lunch with a ''buffalo''Going to breakfastwith abuffaloGoing to dinner with a buffalo
\ No newline at end of file
diff --git a/editions/test/tiddlers/tests/data/pragmas/Parsermode-indented.tid b/editions/test/tiddlers/tests/data/pragmas/Parsermode-indented.tid
index 639f0a7854..10747735f9 100644
--- a/editions/test/tiddlers/tests/data/pragmas/Parsermode-indented.tid
+++ b/editions/test/tiddlers/tests/data/pragmas/Parsermode-indented.tid
@@ -30,7 +30,7 @@ title: ExpectedResult
 
 ! Not Heading
 
-Text with <strong class="tc-emphasis tc-strong">bold</strong><h1 class="">Heading</h1><p>Text with <strong class="tc-emphasis tc-strong">bold</strong></p><p>! Not Heading
+Text with <strong>bold</strong><h1 class="">Heading</h1><p>Text with <strong>bold</strong></p><p>! Not Heading
 
-Text with <strong class="tc-emphasis tc-strong">bold</strong><h1 class="">Heading</h1><p>Text with <strong class="tc-emphasis tc-strong">bold</strong></p>
+Text with <strong>bold</strong><h1 class="">Heading</h1><p>Text with <strong>bold</strong></p>
 </p>
\ No newline at end of file
diff --git a/editions/test/tiddlers/tests/data/pragmas/Parsermode.tid b/editions/test/tiddlers/tests/data/pragmas/Parsermode.tid
index 0a953edc1a..57869e37a9 100644
--- a/editions/test/tiddlers/tests/data/pragmas/Parsermode.tid
+++ b/editions/test/tiddlers/tests/data/pragmas/Parsermode.tid
@@ -30,7 +30,7 @@ title: ExpectedResult
 
 ! Not Heading
 
-Text with <strong class="tc-emphasis tc-strong">bold</strong><h1 class="">Heading</h1><p>Text with <strong class="tc-emphasis tc-strong">bold</strong></p><p>! Not Heading
+Text with <strong>bold</strong><h1 class="">Heading</h1><p>Text with <strong>bold</strong></p><p>! Not Heading
 
-Text with <strong class="tc-emphasis tc-strong">bold</strong><h1 class="">Heading</h1><p>Text with <strong class="tc-emphasis tc-strong">bold</strong></p>
+Text with <strong>bold</strong><h1 class="">Heading</h1><p>Text with <strong>bold</strong></p>
 </p>
\ No newline at end of file
diff --git a/editions/test/tiddlers/tests/data/transclude/Typed.tid b/editions/test/tiddlers/tests/data/transclude/Typed.tid
index 65e3987acc..c99664b593 100644
--- a/editions/test/tiddlers/tests/data/transclude/Typed.tid
+++ b/editions/test/tiddlers/tests/data/transclude/Typed.tid
@@ -29,10 +29,10 @@ testindex: This is ''wikitext''
 +
 title: ExpectedResult
 
-<p>This is <strong class="tc-emphasis tc-strong">wikitext</strong>
+<p>This is <strong>wikitext</strong>
 -
-<pre><code>This is ''wikitext''</code></pre></p><p>This is <strong class="tc-emphasis tc-strong">wikitext</strong>
+<pre><code>This is ''wikitext''</code></pre></p><p>This is <strong>wikitext</strong>
 -
-<pre><code>This is ''wikitext''</code></pre></p><p>This is <strong class="tc-emphasis tc-strong">wikitext</strong>
+<pre><code>This is ''wikitext''</code></pre></p><p>This is <strong>wikitext</strong>
 -
 <pre><code>This is ''wikitext''</code></pre></p>
\ No newline at end of file
diff --git a/themes/tiddlywiki/vanilla/base.tid b/themes/tiddlywiki/vanilla/base.tid
index 98345d6ce4..c795ad362e 100644
--- a/themes/tiddlywiki/vanilla/base.tid
+++ b/themes/tiddlywiki/vanilla/base.tid
@@ -493,11 +493,6 @@ a.tc-tiddlylink-external:hover {
 	color: <<colour tiddler-link-background>>;
 }
 
-/* wikitext bold for ''[[internal link]]'' */
-strong.tc-strong .tc-tiddlylink {
-	font-weight: bolder;
-}
-
 /*
 ** Drag and drop styles
 */