diff --git a/bsp/cvitek/cv18xx_risc-v/SConstruct b/bsp/cvitek/cv18xx_risc-v/SConstruct
index d8f57e0def..04a2682b35 100755
--- a/bsp/cvitek/cv18xx_risc-v/SConstruct
+++ b/bsp/cvitek/cv18xx_risc-v/SConstruct
@@ -21,8 +21,6 @@ env['ASCOM'] = env['ASPPCOM']
 
 Export('RTT_ROOT')
 Export('rtconfig')
-rtconfig.CPU='virt64'
-rtconfig.ARCH='risc-v'
 
 SDK_ROOT = os.path.abspath('./')