diff --git a/libraries/AP_HAL_FLYMAPLE/utility/flash_stm32.c b/libraries/AP_HAL_FLYMAPLE/utility/flash_stm32.cpp
similarity index 100%
rename from libraries/AP_HAL_FLYMAPLE/utility/flash_stm32.c
rename to libraries/AP_HAL_FLYMAPLE/utility/flash_stm32.cpp