diff --git a/rcl_action/include/rcl_action/types.h b/rcl_action/include/rcl_action/types.h
index 52a379a..cb686db 100644
--- a/rcl_action/include/rcl_action/types.h
+++ b/rcl_action/include/rcl_action/types.h
@@ -32,7 +32,6 @@ extern "C"
 #include "rcl/types.h"
 
 #include "rosidl_generator_c/action_type_support_struct.h"
-typedef struct rosidl_action_type_support_t rosidl_action_type_support_t;
 
 // rcl action specific ret codes in 2XXX
 /// Action name does not pass validation return code.