diff --git a/tools/BUILD b/tools/BUILD
index 84da3a8df..f8012f971 100644
--- a/tools/BUILD
+++ b/tools/BUILD
@@ -36,7 +36,7 @@ java_package_configuration(
         "-Xep:ElementsCountedInLoop:WARN",
         "-Xep:EqualsHashCode:WARN",
         "-Xep:EqualsIncompatibleType:WARN",
-        "-Xep:ExpectedExceptionChecker:WARN",
+        "-Xep:ExpectedExceptionChecker:ERROR",
         "-Xep:Finally:WARN",
         "-Xep:FloatingPointLiteralPrecision:WARN",
         "-Xep:FragmentInjection:WARN",