diff --git a/tools/BUILD b/tools/BUILD
index f8012f971..c51e8747e 100644
--- a/tools/BUILD
+++ b/tools/BUILD
@@ -53,7 +53,7 @@ java_package_configuration(
         "-Xep:JUnit3FloatingPointComparisonWithoutDelta:WARN",
         "-Xep:JUnitAmbiguousTestClass:WARN",
         "-Xep:LiteralClassName:WARN",
-        "-Xep:MissingFail:WARN",
+        "-Xep:MissingFail:ERROR",
         "-Xep:MissingOverride:WARN",
         "-Xep:MutableConstantField:WARN",
         "-Xep:NarrowingCompoundAssignment:WARN",