diff --git a/dev/Styles/MessageView.less b/dev/Styles/MessageView.less
index cd4875e93..4f74652d7 100644
--- a/dev/Styles/MessageView.less
+++ b/dev/Styles/MessageView.less
@@ -438,6 +438,10 @@ html.rl-no-preview-pane {
 							margin: 15px;
 						}
 
+						img {
+							max-width: 100%;
+						}
+
 						pre, code {
 							margin: 0px;
 							padding: 0px;