1 files changed, 4 insertions, 6 deletions
diff --git a/devtools/server/connectors/content-process-connector.js b/devtools/server/connectors/content-process-connector.js
index ea95a5d6ab..a2d359e4a5 100644
--- a/devtools/server/connectors/content-process-connector.js
+++ b/devtools/server/connectors/content-process-connector.js
@@ -109,13 +109,11 @@ function connectToContentProcess(connection, mm, onDestroy) {
       }
     }
 
-    const onMessageManagerClose = DevToolsUtils.makeInfallible(
-      (subject, topic, data) => {
-        if (subject == mm) {
-          onClose();
-        }
+    const onMessageManagerClose = DevToolsUtils.makeInfallible(subject => {
+      if (subject == mm) {
+        onClose();
       }
-    );
+    });
     Services.obs.addObserver(onMessageManagerClose, "message-manager-close");
 
     EventEmitter.on(connection, "closed", onClose);