diff --git a/BUILD.gn b/BUILD.gn
index 3473160..eb7959f 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -106,9 +106,10 @@
 
 config("sbase_config") {
   cflags = [
+    "-Wno-implicit-fallthrough",
+    "-Wno-missing-field-initializers",
     "-Wno-sign-compare",
     "-Wno-sometimes-uninitialized",
-    "-Wno-missing-field-initializers",
     "-Wno-tautological-constant-out-of-range-compare",
   ]
 }
diff --git a/libutil/BUILD.gn b/libutil/BUILD.gn
index 11c5eab..b42d4d1 100644
--- a/libutil/BUILD.gn
+++ b/libutil/BUILD.gn
@@ -5,9 +5,10 @@
 config("libutil_config") {
   # Suppress warnings in upstream code that are triggered by Fuchsia compilation flags.
   cflags = [
-    "-Wno-sign-compare",
     "-Wno-constant-conversion",
     "-Wno-conversion",
+    "-Wno-implicit-fallthrough",
+    "-Wno-sign-compare",
   ]
 }