diff --git a/test/cctest/test_inspector_socket_server.cc b/test/cctest/test_inspector_socket_server.cc
index 7d5d0929def..451fbbd6acf 100644
--- a/test/cctest/test_inspector_socket_server.cc
+++ b/test/cctest/test_inspector_socket_server.cc
@@ -301,11 +301,11 @@ class ServerHolder {
 
 class TestSocketServerDelegate : public SocketServerDelegate {
  public:
-  explicit TestSocketServerDelegate(
-      ServerHolder* server,
-      const std::vector<std::string>& target_ids)
+  explicit TestSocketServerDelegate(ServerHolder* server,
+                                    const std::vector<std::string>& target_ids)
       : harness_(server),
         targets_(target_ids),
+        server_(nullptr),
         session_id_(0) {}
 
   ~TestSocketServerDelegate() override {