diff --git a/lib/http.js b/lib/http.js
index 25c308379ec..89005b38693 100644
--- a/lib/http.js
+++ b/lib/http.js
@@ -903,7 +903,7 @@ function Agent(options) {
       self.requests[name].shift().onSocket(socket);
       if (self.requests[name].length === 0) {
         // don't leak
-        delete this.requests[name];
+        delete self.requests[name];
       }
     } else {
       // If there are no pending requests just destroy the