diff --git a/runner/android_junit_runner/javatests/androidx/test/internal/events/client/BUILD b/runner/android_junit_runner/javatests/androidx/test/internal/events/client/BUILD
index bd94e41e4..6542ee092 100644
--- a/runner/android_junit_runner/javatests/androidx/test/internal/events/client/BUILD
+++ b/runner/android_junit_runner/javatests/androidx/test/internal/events/client/BUILD
@@ -24,6 +24,7 @@ axt_android_local_test(
 
 android_library(
     name = "sampletest",
+    testonly = 1,
     srcs = ["SampleJUnitTest.java"],
     deps = ["@maven//:junit_junit"],
 )