diff --git a/BUILD.gn b/BUILD.gn
index aeaf8ed..1dd2bc3 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -330,6 +330,7 @@
   cflags = [
     "-Wno-string-plus-int",
     "-Wno-conversion",
+    "-Wno-implicit-fallthrough",
   ]
 }