diff --git a/src/inspector_agent.cc b/src/inspector_agent.cc
index 7f82b7b051..44c7501375 100644
--- a/src/inspector_agent.cc
+++ b/src/inspector_agent.cc
@@ -39,7 +39,7 @@ static const uint8_t PROTOCOL_JSON[] = {
 
 std::string GetWsUrl(int port, const std::string& id) {
   char buf[1024];
-  snprintf(buf, sizeof(buf), "localhost:%d/%s", port, id.c_str());
+  snprintf(buf, sizeof(buf), "127.0.0.1:%d/%s", port, id.c_str());
   return buf;
 }
 
diff --git a/test/inspector/test-inspector.js b/test/inspector/test-inspector.js
index d3d0bbd559..75c645bb22 100644
--- a/test/inspector/test-inspector.js
+++ b/test/inspector/test-inspector.js
@@ -11,7 +11,7 @@ function checkListResponse(err, response) {
   assert.ok(response[0]['devtoolsFrontendUrl']);
   assert.ok(
     response[0]['webSocketDebuggerUrl']
-      .match(/ws:\/\/localhost:\d+\/[0-9A-Fa-f]{8}-/));
+      .match(/ws:\/\/127.0.0.1:\d+\/[0-9A-Fa-f]{8}-/));
 }
 
 function checkVersion(err, response) {