diff --git a/github-markdown.css b/github-markdown.css
index 1146596..422151f 100644
--- a/github-markdown.css
+++ b/github-markdown.css
@@ -689,7 +689,7 @@
   margin-top: 3px;
 }
 
-.markdown-body .task-list-item-checkbox {
+.markdown-body .task-list-item input {
   float: left;
   margin: 0.3em 0 0.25em -1.6em;
   vertical-align: middle;
diff --git a/index.js b/index.js
index 59717b4..35017b2 100644
--- a/index.js
+++ b/index.js
@@ -57,6 +57,11 @@ function cleanupCss(str) {
 				return false;
 			}
 
+			// work around GitHub Markdown API inconsistency #10
+			if (el.selectors[0] === '.task-list-item-checkbox') {
+				el.selectors[0] = '.task-list-item input';
+			}
+
 			// remove `body` from `body, input {}`
 			if (el.selectors[0] === 'body' && el.selectors[1] === 'input') {
 				el.selectors.shift();