--- a/browser/components/nsBrowserGlue.js
+++ b/browser/components/nsBrowserGlue.js
@@ -926,17 +926,19 @@ BrowserGlue.prototype = {
         SCALING_PROBE_NAME = "DISPLAY_SCALING_OSX";
         break;
       case "linux":
         SCALING_PROBE_NAME = "DISPLAY_SCALING_LINUX";
         break;
     }
     if (SCALING_PROBE_NAME) {
       let scaling = aWindow.devicePixelRatio * 100;
-      Services.telemetry.getHistogramById(SCALING_PROBE_NAME).add(scaling);
+      try {
+        Services.telemetry.getHistogramById(SCALING_PROBE_NAME).add(scaling);
+      } catch (ex) {}
     }
   },
 
   // the first browser window has finished initializing
   _onFirstWindowLoaded: function BG__onFirstWindowLoaded(aWindow) {
     // Initialize PdfJs when running in-process and remote. This only
     // happens once since PdfJs registers global hooks. If the PdfJs
     // extension is installed the init method below will be overridden