diff --git a/src/vector/index.html b/src/vector/index.html
index fba86dbdce..848241ef73 100644
--- a/src/vector/index.html
+++ b/src/vector/index.html
@@ -64,14 +64,14 @@
     <script src="<%= htmlWebpackPlugin.files.js.find(entry => entry.includes("bundle.js")) %>"></script>
 
     <!-- Legacy supporting Prefetch images -->
-    <img src="<%= require('matrix-react-sdk/res/img/warning.svg') %>" width="24" height="23" style="visibility: hidden; position: absolute; top: 0px; left: 0px;"/>
-    <img src="<%= require('matrix-react-sdk/res/img/e2e/warning.svg') %>" width="24" height="23" style="visibility: hidden; position: absolute; top: 0px; left: 0px;"/>
-    <img src="<%= require('matrix-react-sdk/res/img/feather-customised/warning-triangle.svg') %>" width="24" height="23" style="visibility: hidden; position: absolute; top: 0px; left: 0px;"/>
-    <img src="<%= require('matrix-react-sdk/res/img/format/bold.svg') %>" width="25" height="22" style="visibility: hidden; position: absolute; top: 0px; left: 0px;"/>
-    <img src="<%= require('matrix-react-sdk/res/img/format/code.svg') %>" width="25" height="22" style="visibility: hidden; position: absolute; top: 0px; left: 0px;"/>
-    <img src="<%= require('matrix-react-sdk/res/img/format/italics.svg') %>" width="25" height="22" style="visibility: hidden; position: absolute; top: 0px; left: 0px;"/>
-    <img src="<%= require('matrix-react-sdk/res/img/format/quote.svg') %>" width="25" height="22" style="visibility: hidden; position: absolute; top: 0px; left: 0px;"/>
-    <img src="<%= require('matrix-react-sdk/res/img/format/strikethrough.svg') %>" width="25" height="22" style="visibility: hidden; position: absolute; top: 0px; left: 0px;"/>
+    <img src="<%= require('matrix-react-sdk/res/img/warning.svg') %>" aria-hidden alt="" width="24" height="23" style="visibility: hidden; position: absolute; top: 0px; left: 0px;"/>
+    <img src="<%= require('matrix-react-sdk/res/img/e2e/warning.svg') %>" aria-hidden alt="" width="24" height="23" style="visibility: hidden; position: absolute; top: 0px; left: 0px;"/>
+    <img src="<%= require('matrix-react-sdk/res/img/feather-customised/warning-triangle.svg') %>" aria-hidden alt="" width="24" height="23" style="visibility: hidden; position: absolute; top: 0px; left: 0px;"/>
+    <img src="<%= require('matrix-react-sdk/res/img/format/bold.svg') %>" aria-hidden alt="" width="25" height="22" style="visibility: hidden; position: absolute; top: 0px; left: 0px;"/>
+    <img src="<%= require('matrix-react-sdk/res/img/format/code.svg') %>" aria-hidden alt="" width="25" height="22" style="visibility: hidden; position: absolute; top: 0px; left: 0px;"/>
+    <img src="<%= require('matrix-react-sdk/res/img/format/italics.svg') %>" aria-hidden alt="" width="25" height="22" style="visibility: hidden; position: absolute; top: 0px; left: 0px;"/>
+    <img src="<%= require('matrix-react-sdk/res/img/format/quote.svg') %>" aria-hidden alt="" width="25" height="22" style="visibility: hidden; position: absolute; top: 0px; left: 0px;"/>
+    <img src="<%= require('matrix-react-sdk/res/img/format/strikethrough.svg') %>" aria-hidden alt="" width="25" height="22" style="visibility: hidden; position: absolute; top: 0px; left: 0px;"/>
 
     <audio id="messageAudio">
         <source src="media/message.ogg" type="audio/ogg" />