diff --git a/src/components/App.jsx b/src/components/App.jsx
index df8983c..7e9a986 100644
--- a/src/components/App.jsx
+++ b/src/components/App.jsx
@@ -23,7 +23,7 @@ import SurveyModal from './modals/SurveyModal'
 import { downloadGlyphsMetadata, downloadSpriteMetadata } from '../libs/metadata'
 import {latest, validate} from '@mapbox/mapbox-gl-style-spec'
 import style from '../libs/style'
-import { initialStyleUrl, loadStyleUrl } from '../libs/urlopen'
+import { initialStyleUrl, loadStyleUrl, removeStyleQuerystring } from '../libs/urlopen'
 import { undoMessages, redoMessages } from '../libs/diffmessage'
 import { StyleStore } from '../libs/stylestore'
 import { ApiStyleStore } from '../libs/apistore'
@@ -148,8 +148,11 @@ export default class App extends React.Component {
 
     const styleUrl = initialStyleUrl()
     if(styleUrl) {
-      this.styleStore = new StyleStore()
-      loadStyleUrl(styleUrl, mapStyle => this.onStyleChanged(mapStyle))
+      if(window.confirm("Load style from URL and discard current changes?")) {
+        this.styleStore = new StyleStore()
+        loadStyleUrl(styleUrl, mapStyle => this.onStyleChanged(mapStyle))
+      }
+      removeStyleQuerystring()
     } else {
       this.styleStore.init(err => {
         if(err) {