diff --git a/call/rtp_transport_controller_send_interface.h b/call/rtp_transport_controller_send_interface.h
index ad3aa2b..0269b13 100644
--- a/call/rtp_transport_controller_send_interface.h
+++ b/call/rtp_transport_controller_send_interface.h
@@ -15,7 +15,7 @@
 
 #include <string>
 
-#include "api/optional.h"
+#include "absl/types/optional.h"
 #include "api/transport/bitrate_settings.h"
 #include "call/bitrate_constraints.h"