diff --git a/devtools/shared/webconsole/network-monitor.js b/devtools/shared/webconsole/network-monitor.js
index 556f7deeb..8bc94d30b 100644
--- a/devtools/shared/webconsole/network-monitor.js
+++ b/devtools/shared/webconsole/network-monitor.js
@@ -320,7 +320,7 @@ NetworkResponseListener.prototype = {
       let impl = this._wrappedNotificationCallbacks.getInterface(iid);
       impl[method].apply(impl, args);
     } catch (e) {
-      if (e.result != Cr.NS_ERROR_NO_INTERFACE) {
+      if (e.name != "TypeError" && e.result != Cr.NS_ERROR_NO_INTERFACE) {
         throw e;
       }
     }
@@ -1354,13 +1354,13 @@ NetworkMonitor.prototype = {
     try {
       response.remoteAddress = httpActivity.channel.remoteAddress;
     } catch (e) {
-      Cu.reportError(e);
+      if (e.result != Cr.NS_ERROR_NOT_AVAILABLE) Cu.reportError(e);
     }
     response.remotePort = null;
     try {
       response.remotePort = httpActivity.channel.remotePort;
     } catch (e) {
-      Cu.reportError(e);
+      if (e.result != Cr.NS_ERROR_NOT_AVAILABLE) Cu.reportError(e);
     }
     response.status = statusLineArray.shift();
     response.statusText = statusLineArray.join(" ");