diff --git a/libraries/AP_Generator/AP_Generator_RichenPower.cpp b/libraries/AP_Generator/AP_Generator_RichenPower.cpp
index 530f8192b3..cbfc2fcdeb 100644
--- a/libraries/AP_Generator/AP_Generator_RichenPower.cpp
+++ b/libraries/AP_Generator/AP_Generator_RichenPower.cpp
@@ -30,6 +30,8 @@ extern const AP_HAL::HAL& hal;
 // init method; configure communications with the generator
 void AP_Generator_RichenPower::init()
 {
+    ASSERT_STORAGE_SIZE(RichenPacket, 70);
+
     const AP_SerialManager &serial_manager = AP::serialmanager();
 
     uart = serial_manager.find_serial(AP_SerialManager::SerialProtocol_Generator, 0);
diff --git a/libraries/AP_Generator/AP_Generator_RichenPower.h b/libraries/AP_Generator/AP_Generator_RichenPower.h
index c5999c0ed6..bd9bfc25d9 100644
--- a/libraries/AP_Generator/AP_Generator_RichenPower.h
+++ b/libraries/AP_Generator/AP_Generator_RichenPower.h
@@ -153,7 +153,6 @@ private:
         uint8_t footermagic1;
         uint8_t footermagic2;
     };
-    assert_storage_size<RichenPacket, 70> _assert_storage_size_RichenPacket UNUSED_PRIVATE_MEMBER;
 
     union RichenUnion {
         uint8_t parse_buffer[70];