diff --git a/src/main/resources/templates/view-pdf.html b/src/main/resources/templates/view-pdf.html
index 3e0b2326..c00f816b 100644
--- a/src/main/resources/templates/view-pdf.html
+++ b/src/main/resources/templates/view-pdf.html
@@ -184,7 +184,7 @@ See https://github.com/adobe-type-tools/cmap-resources
 
         <div id="secondaryToolbar" class="secondaryToolbar hidden doorHangerRight">
           <div id="secondaryToolbarButtonContainer">
-            <button id="secondaryOpenFile" class="secondaryToolbarButton" hidden="true" title="Open File" tabindex="51" data-l10n-id="pdfjs-open-file-button">
+            <button id="secondaryOpenFile" class="secondaryToolbarButton visibleMediumView" title="Open File" tabindex="51" data-l10n-id="pdfjs-open-file-button">
               <span data-l10n-id="pdfjs-open-file-button-label">Open</span>
             </button>