else if (Command == 'e')
        {
                /* Clear the application section of flash */
-               for (uint32_t CurrFlashAddress = 0; CurrFlashAddress < BOOT_START_ADDR; CurrFlashAddress += SPM_PAGESIZE)
+               for (uint32_t CurrFlashAddress = 0; CurrFlashAddress < (uint32_t)BOOT_START_ADDR; CurrFlashAddress += SPM_PAGESIZE)
                {
                        boot_page_erase(CurrFlashAddress);
                        boot_spm_busy_wait();