diff --git a/target/linux/ramips/mt7621/target.mk b/target/linux/ramips/mt7621/target.mk
index c1c39a1018..7e175435b3 100644
--- a/target/linux/ramips/mt7621/target.mk
+++ b/target/linux/ramips/mt7621/target.mk
@@ -7,7 +7,6 @@ BOARDNAME:=MT7621 based boards
 FEATURES+=usb rtc
 CPU_TYPE:=1004kc
 CPU_SUBTYPE:=dsp
-CFLAGS:=-Os -pipe -mmt -mips32r2 -mtune=1004kc
 
 DEFAULT_PACKAGES += kmod-mt76