diff --git a/src/js/messaging.js b/src/js/messaging.js
index 95e716751..a6e2f3c9b 100644
--- a/src/js/messaging.js
+++ b/src/js/messaging.js
@@ -990,8 +990,7 @@ var onMessage = function(request, sender, callback) {
         break;
 
     case 'writeHiddenSettings':
-        µb.hiddenSettings = µb.hiddenSettingsFromString(request.content);
-        µb.saveHiddenSettings();
+        µb.changeHiddenSettings(µb.hiddenSettingsFromString(request.content));
         break;
 
     default:
diff --git a/src/js/redirect-engine.js b/src/js/redirect-engine.js
index b2ccda7da..bab57cda5 100644
--- a/src/js/redirect-engine.js
+++ b/src/js/redirect-engine.js
@@ -484,6 +484,8 @@ RedirectEngine.prototype.resourcesFromString = function(text) {
     }
 
     warResolve();
+
+    this.modifyTime = Date.now();
 };
 
 /******************************************************************************/
diff --git a/src/js/ublock.js b/src/js/ublock.js
index 8f5698e5e..82b43c285 100644
--- a/src/js/ublock.js
+++ b/src/js/ublock.js
@@ -379,6 +379,21 @@ var matchBucket = function(url, hostname, bucket, start) {
 
 /******************************************************************************/
 
+// https://www.reddit.com/r/uBlockOrigin/comments/8524cf/my_custom_scriptlets_doesnt_work_what_am_i_doing/
+
+µBlock.changeHiddenSettings = function(hs) {
+    var mustReloadResources =
+        hs.userResourcesLocation !== this.hiddenSettings.userResourcesLocation;
+    this.hiddenSettings = hs;
+    this.saveHiddenSettings();
+    if ( mustReloadResources ) {
+        this.redirectEngine.invalidateResourcesSelfie();
+        this.loadRedirectResources();
+    }
+};
+
+/******************************************************************************/
+
 µBlock.elementPickerExec = function(tabId, targetElement, zap) {
     if ( vAPI.isBehindTheSceneTabId(tabId) ) {
         return;