diff --git a/src/main/resources/org/jenkinsci/plugins/plaincredentials/impl/FileCredentialsImpl/credentials.jelly b/src/main/resources/org/jenkinsci/plugins/plaincredentials/impl/FileCredentialsImpl/credentials.jelly
index 7c1b354..b0e13ac 100644
--- a/src/main/resources/org/jenkinsci/plugins/plaincredentials/impl/FileCredentialsImpl/credentials.jelly
+++ b/src/main/resources/org/jenkinsci/plugins/plaincredentials/impl/FileCredentialsImpl/credentials.jelly
@@ -27,7 +27,8 @@ THE SOFTWARE.
     <j:choose>
         <j:when test="${instance == null}">
             <f:entry title="${%File}" field="file">
-                <input type="file" name="file" size="40" jsonAware="yes"/>
+                <!-- TODO 2.385+ switch to f:file -->
+                <input type="file" name="file" class="jenkins-file-upload" size="40" jsonAware="yes"/>
             </f:entry>
         </j:when>
         <j:otherwise>
@@ -40,7 +41,8 @@ THE SOFTWARE.
             <f:optionalBlock title="${%Replace}" inline="true">
                 <f:entry title="${%Filename}">${instance.fileName}</f:entry>
                 <f:entry title="${%File}" field="file">
-                    <input type="file" name="file" size="40" jsonAware="yes"/>
+                    <!-- TODO 2.385+ switch to f:file -->
+                    <input type="file" class="jenkins-file-upload" name="file" size="40" jsonAware="yes"/>
                 </f:entry>
             </f:optionalBlock>
         </j:otherwise>