diff --git a/targets/targets.json b/targets/targets.json
index db33f8b56e..9a019dc87b 100755
--- a/targets/targets.json
+++ b/targets/targets.json
@@ -4296,7 +4296,6 @@
         "is_disk_virtual": true,
         "supported_toolchains": ["ARM", "uARM", "GCC_ARM", "IAR"],
         "inherits": ["Target"],
-        "progen": {"target": "numaker-pfm-m2351"},
         "macros": ["CMSIS_NVIC_VIRTUAL", "CMSIS_NVIC_VIRTUAL_HEADER_FILE=\"cmsis_nvic.h\"", "CMSIS_VECTAB_VIRTUAL", "CMSIS_VECTAB_VIRTUAL_HEADER_FILE=\"cmsis_nvic.h\""],        
         "device_has": ["LOWPOWERTIMER", "RTC", "INTERRUPTIN","PORTIN", "PORTINOUT", "PORTOUT", "SERIAL","SERIAL_ASYNCH", "SERIAL_FC", "STDIO_MESSAGES", "SLEEP"],
         "release_versions": ["5"],