diff --git a/meta-oniro-core/recipes-extended/diffutils/diffutils_%.bbappend b/meta-oniro-core/recipes-extended/diffutils/diffutils_%.bbappend
index b596b65db2710a3a8d4940de332b0eb4c36ab379..20880b7283caa11b22684b2804b96a674752090c 100644
--- a/meta-oniro-core/recipes-extended/diffutils/diffutils_%.bbappend
+++ b/meta-oniro-core/recipes-extended/diffutils/diffutils_%.bbappend
@@ -8,4 +8,4 @@
 # -Werror=format-nonliteral globally in OPTIMIZE_FOR=security mode
 # while keeping diffutils building.
 
-TARGET_CFLAGS_remove = "-Werror=format-nonliteral"
+TARGET_CFLAGS:remove = "-Werror=format-nonliteral"