diff --git a/github-dark.user.css b/github-dark.user.css
index 0a25887e7..5bb5dd29a 100644
--- a/github-dark.user.css
+++ b/github-dark.user.css
@@ -175,7 +175,6 @@
 }
 @advanced text font-choice "Code Font" Menlo
 @advanced text font-features "Code Font Features" normal
-@advanced text font-size-choice "Code Font Size" 12
 @advanced dropdown code-wrap "Code Wrap" {
   nowrap "No Wrap" <<<EOT
   EOT;
@@ -20188,7 +20187,6 @@
   #gist-form .file .input textarea, .blob-code-inner {
     font-family: "/*[[font-choice]]*/", Consolas, "Liberation Mono", Menlo, Courier, monospace !important;
     font-feature-settings: /*[[font-features]]*/ !important;
-    font-size: /*[[font-size-choice]]*/ !important;
   }
   /* Base link colors */
   .Header-link:focus, .Header-link:hover, table.files .octicon-file-directory,
diff --git a/index.html b/index.html
index 23a54bdda..1a5818261 100644
--- a/index.html
+++ b/index.html
@@ -1859,9 +1859,6 @@ <h3>CodeMirror Editor (JS)</h3>
   }, {
     pattern: '/*[[font-choice]]*/',
     replacement: config.font
-  }, {
-    pattern: '/*[[font-size-choice]]*/',
-    replacement: config.fontSize
   }, {
     pattern: '/*[[code-wrap]]*/',
     replacement: config.codeWrapCss
diff --git a/src/main.css b/src/main.css
index 9578d2ede..089402283 100644
--- a/src/main.css
+++ b/src/main.css
@@ -44,7 +44,6 @@
   #gist-form .file .input textarea, .blob-code-inner {
     font-family: "/*[[font-choice]]*/", Consolas, "Liberation Mono", Menlo, Courier, monospace !important;
     font-feature-settings: /*[[font-features]]*/ !important;
-    font-size: /*[[font-size-choice]]*/ !important;
   }
   /* Base link colors */
   .Header-link:focus, .Header-link:hover, table.files .octicon-file-directory,
diff --git a/src/template.css b/src/template.css
index 37b858cf6..92d18342f 100644
--- a/src/template.css
+++ b/src/template.css
@@ -64,7 +64,6 @@
 }
 @advanced text font-choice "Code Font" Menlo
 @advanced text font-features "Code Font Features" normal
-@advanced text font-size-choice "Code Font Size" 12
 @advanced dropdown code-wrap "Code Wrap" {
   nowrap "No Wrap" <<<EOT
   EOT;