diff --git a/ArduSub/Parameters.cpp b/ArduSub/Parameters.cpp
index 25b21239cf..96976e9e42 100644
--- a/ArduSub/Parameters.cpp
+++ b/ArduSub/Parameters.cpp
@@ -670,6 +670,7 @@ void Sub::load_parameters()
 
         // erase all parameters
         hal.console->printf("Firmware change: erasing EEPROM...\n");
+        StorageManager::erase();
         AP_Param::erase_all();
 
         // save the current format version