diff --git a/lib/events.js b/lib/events.js
index 5dfa34469b09af..3fce38f881b9fb 100644
--- a/lib/events.js
+++ b/lib/events.js
@@ -224,7 +224,7 @@ function _addListener(target, type, listener, prepend) {
 
   if (existing === undefined) {
     // Optimize the case of one listener. Don't need the extra array object.
-    existing = events[type] = listener;
+    events[type] = listener;
     ++target._eventsCount;
   } else {
     if (typeof existing === 'function') {
diff --git a/lib/internal/readline.js b/lib/internal/readline.js
index c325f42cf42328..f1716f1f25824f 100644
--- a/lib/internal/readline.js
+++ b/lib/internal/readline.js
@@ -258,7 +258,7 @@ function* emitKeys(stream) {
           s += (ch = yield);
 
           if (ch >= '0' && ch <= '9') {
-            s += (ch = yield);
+            s += yield;
           }
         }
 
diff --git a/lib/net.js b/lib/net.js
index a46844adf3e9a0..821647c81fd0a0 100644
--- a/lib/net.js
+++ b/lib/net.js
@@ -1055,10 +1055,6 @@ function afterConnect(status, handle, req, readable, writable) {
     return;
   }
 
-  // Update handle if it was wrapped
-  // TODO(indutny): assert that the handle is actually an ancestor of old one
-  handle = self._handle;
-
   debug('afterConnect');
 
   assert(self.connecting);