--- a/third_party/openh264/BUILD.gn
+++ b/third_party/openh264/BUILD.gn
@@ -24,6 +24,7 @@ config("config") {
   if (!is_win || is_clang) {
     cflags += [
       "-Wno-format",
+      "-Wno-format-security",
       "-Wno-header-hygiene",
       "-Wno-unused-function",
       "-Wno-unused-value",