diff --git a/html/app.js b/html/app.js
index 626e522c..528cae21 100644
--- a/html/app.js
+++ b/html/app.js
@@ -836,6 +836,7 @@ function isConfCmd(line){
 function setDirty(d){
   S.dirty=d;
   $("dirty").classList.toggle("show",d);
+  $("saveBtn").classList.toggle("pri",d);
 }
 function postCmd(cmd,quiet){
   return api("/cmd",{method:"POST",body:cmd}).then(function(r){
diff --git a/html/index.html b/html/index.html
index 21b7d17f..6e8c782a 100644
--- a/html/index.html
+++ b/html/index.html
@@ -216,7 +216,7 @@ button.danger{background:var(--bad);color:#fff;border-color:transparent}
     </button>
     <span id="ttitle"></span>
     <span id="dirty" data-i18n="hdr_dirty" data-i18n-t="hdr_dirty_t">unsaved changes</span>
-    <button class="ctl pri" id="saveBtn" data-i18n="hdr_save" data-i18n-t="hdr_save_t">Save to flash</button>
+    <button class="ctl" id="saveBtn" data-i18n="hdr_save" data-i18n-t="hdr_save_t">Save to flash</button>
   </header>
 
   <main>