diff --git a/Makefile.prebuild b/Makefile.prebuild
index b7d695a75..04d8cec00 100644
--- a/Makefile.prebuild
+++ b/Makefile.prebuild
@@ -52,7 +52,7 @@ TARGET_FLAGS = -mips64r6
 endif
 
 ifeq ($(TARGET), C910V)
-TARGET_FLAGS = -march=rv64gcv0p7_zfh_xtheadc -mabi=lp64d
+TARGET_FLAGS = -march=rv64gc_zfh_xtheadc_xtheadvector -mabi=lp64d
 endif
 
 ifeq ($(TARGET), CK860FV)
diff --git a/Makefile.riscv64 b/Makefile.riscv64
index 0ee26c1b5..487529c44 100644
--- a/Makefile.riscv64
+++ b/Makefile.riscv64
@@ -1,6 +1,6 @@
 ifeq ($(CORE), C910V)
-CCOMMON_OPT += -march=rv64imafdcv0p7_zfh_xtheadc -mabi=lp64d -mtune=c920
-FCOMMON_OPT += -march=rv64imafdcv0p7_zfh_xtheadc -mabi=lp64d -mtune=c920 -static
+CCOMMON_OPT += -march=rv64imafdc_zfh_xtheadc_xtheadvector -mabi=lp64d -mtune=c920
+FCOMMON_OPT += -march=rv64imafdc_zfh_xtheadc_xtheadvector -mabi=lp64d -mtune=c920 -static
 endif
 ifeq ($(CORE), x280)
 CCOMMON_OPT += -march=rv64imafdcv_zba_zbb_zfh_zvl512b -mabi=lp64d