diff --git a/test/cpp/qps/client.h b/test/cpp/qps/client.h
index c8809cbc5b6bf7aec18e4589d3ffe43d42f1a289..5fb87b278259c00ac0284ef21b70fd76c2ad23da 100644
--- a/test/cpp/qps/client.h
+++ b/test/cpp/qps/client.h
@@ -129,7 +129,10 @@ class HistogramEntry GRPC_FINAL {
 
 class Client {
  public:
-  Client() : timer_(new UsageTimer), interarrival_timer_() {
+  Client()
+      : timer_(new UsageTimer),
+        interarrival_timer_(),
+        started_requests_(false) {
     gpr_event_init(&start_requests_);
   }
   virtual ~Client() {}