diff --git a/testing/ostest/ostest_main.c b/testing/ostest/ostest_main.c
index 6bf75d86f..4e2ca3484 100644
--- a/testing/ostest/ostest_main.c
+++ b/testing/ostest/ostest_main.c
@@ -381,7 +381,7 @@ static int user_main(int argc, char *argv[])
       check_test_memory_usage();
 #endif
 
-#if !defined(CONFIG_DISABLE_PTHREAD) && defined(__KERNEL__) && \
+#if !defined(CONFIG_DISABLE_PTHREAD) && defined(CONFIG_BUILD_FLAT) && \
     defined(CONFIG_SCHED_WORKQUEUE)
       /* Check work queues */