diff --git a/toolkit/components/telemetry/TelemetrySession.jsm b/toolkit/components/telemetry/TelemetrySession.jsm
index e56d65a81ba6..11be6ae7ff57 100644
--- a/toolkit/components/telemetry/TelemetrySession.jsm
+++ b/toolkit/components/telemetry/TelemetrySession.jsm
@@ -41,6 +41,7 @@ const PREF_ENABLED = PREF_BRANCH + "enabled";
 const PREF_PREVIOUS_BUILDID = PREF_BRANCH + "previousBuildID";
 const PREF_CACHED_CLIENTID = PREF_BRANCH + "cachedClientID"
 const PREF_FHR_UPLOAD_ENABLED = "datareporting.healthreport.uploadEnabled";
+const PREF_ASYNC_PLUGIN_INIT = "dom.ipc.plugins.asyncInit";
 
 const MESSAGE_TELEMETRY_PAYLOAD = "Telemetry:Payload";
 
@@ -547,7 +548,8 @@ let Impl = {
       appUpdateChannel: UpdateChannel.get(),
       platformBuildID: ai.platformBuildID,
       revision: HISTOGRAMS_FILE_VERSION,
-      locale: getLocale()
+      locale: getLocale(),
+      asyncPluginInit: Preferences.get(PREF_ASYNC_PLUGIN_INIT, false)
     };
 
     // In order to share profile data, the appName used for Metro Firefox is "Firefox",