diff --git a/src/cpp/thread_manager/thread_manager.cc b/src/cpp/thread_manager/thread_manager.cc
index 82f5148e5e4..c5df8cf9e7a 100644
--- a/src/cpp/thread_manager/thread_manager.cc
+++ b/src/cpp/thread_manager/thread_manager.cc
@@ -52,10 +52,6 @@ void ThreadManager::WorkerThread::Run() {
 }
 
 
-inline bool ThreadManager::WorkerThread::created() const {
-  return created_;
-}
-
 ThreadManager::WorkerThread::~WorkerThread() {
   // Don't join until the thread is fully constructed.
   thd_.Join();
diff --git a/src/cpp/thread_manager/thread_manager.h b/src/cpp/thread_manager/thread_manager.h
index 74f71e4b578..d51f0969695 100644
--- a/src/cpp/thread_manager/thread_manager.h
+++ b/src/cpp/thread_manager/thread_manager.h
@@ -124,7 +124,7 @@ class ThreadManager {
     WorkerThread(ThreadManager* thd_mgr);
     ~WorkerThread();
 
-    bool created() const;
+    bool created() const { return created_; }
    private:
     // Calls thd_mgr_->MainWorkLoop() and once that completes, calls
     // thd_mgr_>MarkAsCompleted(this) to mark the thread as completed