diff --git a/src/components/views/messages/MImageBody.js b/src/components/views/messages/MImageBody.js
index 083dc342db..c210c64318 100644
--- a/src/components/views/messages/MImageBody.js
+++ b/src/components/views/messages/MImageBody.js
@@ -240,7 +240,7 @@ export default class extends React.Component {
     _messageContent(contentUrl, thumbUrl, content) {
         // The maximum height of the thumbnail as it is rendered as an <img>
         const maxHeight = Math.min(THUMBNAIL_MAX_HEIGHT, content.info.h);
-        // The maximum width of the thumbnail, as dictated by it's natural
+        // The maximum width of the thumbnail, as dictated by its natural
         // maximum height.
         const maxWidth = content.info.w * maxHeight / content.info.h;