diff --git a/smoke-test/spring-boot-smoke-test-prometheus/build.gradle b/smoke-test/spring-boot-smoke-test-prometheus/build.gradle
index 2a7c6204efd..33a03b98b70 100644
--- a/smoke-test/spring-boot-smoke-test-prometheus/build.gradle
+++ b/smoke-test/spring-boot-smoke-test-prometheus/build.gradle
@@ -31,3 +31,7 @@ dependencies {
 	testImplementation(project(":starter:spring-boot-starter-test"))
 	testImplementation(project(":starter:spring-boot-starter-webmvc-test"))
 }
+
+tasks.named("compileTestJava") {
+	options.nullability.checking = "tests"
+}