--- a/toolkit/components/cleardata/ClearDataService.js
+++ b/toolkit/components/cleardata/ClearDataService.js
@@ -410,30 +410,38 @@ const PredictorNetworkCleaner = {
              getService(Ci.nsINetworkPredictor);
     np.reset();
     return Promise.resolve();
   },
 };
 
 const PushNotificationsCleaner = {
   deleteByHost(aHost, aOriginAttributes) {
+    if (!Services.prefs.getBoolPref("dom.push.enabled", false)) {
+      return Promise.resolve();
+    }
+
     return new Promise((aResolve, aReject) => {
       let push = Cc["@mozilla.org/push/Service;1"]
                    .getService(Ci.nsIPushService);
       push.clearForDomain(aHost, aStatus => {
         if (!Components.isSuccessCode(aStatus)) {
           aReject();
         } else {
           aResolve();
         }
       });
     });
   },
 
   deleteAll() {
+    if (!Services.prefs.getBoolPref("dom.push.enabled", false)) {
+      return Promise.resolve();
+    }
+
     return new Promise((aResolve, aReject) => {
       let push = Cc["@mozilla.org/push/Service;1"]
                    .getService(Ci.nsIPushService);
       push.clearForDomain("*", aStatus => {
         if (!Components.isSuccessCode(aStatus)) {
           aReject();
         } else {
           aResolve();