diff --git a/api/task_queue/task_queue_base.h b/api/task_queue/task_queue_base.h
index b7c92f8647..c3e79b72cc 100644
--- a/api/task_queue/task_queue_base.h
+++ b/api/task_queue/task_queue_base.h
@@ -130,7 +130,7 @@ class RTC_LOCKABLE RTC_EXPORT TaskQueueBase {
   bool IsCurrent() const { return Current() == this; }
 
  protected:
-  class CurrentTaskQueueSetter {
+  class RTC_EXPORT CurrentTaskQueueSetter {
    public:
     explicit CurrentTaskQueueSetter(TaskQueueBase* task_queue);
     CurrentTaskQueueSetter(const CurrentTaskQueueSetter&) = delete;