1 files changed, 8 insertions, 2 deletions
diff --git a/packages/gitbook-core/src/components/HTMLContent.js b/packages/gitbook-core/src/components/HTMLContent.js
index 979fe0c..4ce41f6 100644
--- a/packages/gitbook-core/src/components/HTMLContent.js
+++ b/packages/gitbook-core/src/components/HTMLContent.js
@@ -12,9 +12,15 @@ const { InjectedComponent } = require('./InjectedComponent');
 
 function inject(injectedProps, Component) {
     return (props) => {
+        const cleanProps = {
+            ...props,
+            className: props.className
+        };
+        delete cleanProps['class'];
+
         return (
-            <InjectedComponent {...injectedProps(props)}>
-                <Component {...props} />
+            <InjectedComponent {...injectedProps(cleanProps)}>
+                <Component {...cleanProps} />
             </InjectedComponent>
         );
     };