diff --git a/skins/base/views/atoms/MemberAvatar.js b/skins/base/views/atoms/MemberAvatar.js
index 4ef5fea9..dccf0852 100644
--- a/skins/base/views/atoms/MemberAvatar.js
+++ b/skins/base/views/atoms/MemberAvatar.js
@@ -27,7 +27,7 @@ module.exports = React.createClass({
     render: function() {
         return (
             <img className="mx_MemberAvatar" src={this.state.imageUrl}
-                onerror={this.onError}
+                onError={this.onError}
                 width={this.props.width} height={this.props.height} />
         );
     }
diff --git a/skins/base/views/atoms/RoomAvatar.js b/skins/base/views/atoms/RoomAvatar.js
index 48febbc8..48dbadef 100644
--- a/skins/base/views/atoms/RoomAvatar.js
+++ b/skins/base/views/atoms/RoomAvatar.js
@@ -26,7 +26,7 @@ module.exports = React.createClass({
 
     render: function() {
         return (
-            <img className="mx_RoomAvatar" src={this.state.imageUrl} onerror={this.onError}
+            <img className="mx_RoomAvatar" src={this.state.imageUrl} onError={this.onError}
                 width={this.props.width} height={this.props.height}
             />
         );