diff --git a/tests/kernel/threads/scheduling/schedule_api/src/main.c b/tests/kernel/threads/scheduling/schedule_api/src/main.c
index eea60db4767..24ce309ba26 100644
--- a/tests/kernel/threads/scheduling/schedule_api/src/main.c
+++ b/tests/kernel/threads/scheduling/schedule_api/src/main.c
@@ -19,17 +19,17 @@
 void test_main(void *p1, void *p2, void *p3)
 {
 	ztest_test_suite(test_threads_scheduling,
-		ztest_unit_test(test_priority_cooperative),
-		ztest_unit_test(test_priority_preemptible),
-		ztest_unit_test(test_yield_cooperative),
-		ztest_unit_test(test_sleep_cooperative),
-		ztest_unit_test(test_sleep_wakeup_preemptible),
-		ztest_unit_test(test_time_slicing_preemptible),
-		ztest_unit_test(test_time_slicing_disable_preemptible),
-		ztest_unit_test(test_lock_preemptible),
-		ztest_unit_test(test_unlock_preemptible),
-		ztest_unit_test(test_sched_is_preempt_thread),
-		ztest_unit_test(test_slice_reset)
-		);
+			 ztest_unit_test(test_priority_cooperative),
+			 ztest_unit_test(test_priority_preemptible),
+			 ztest_unit_test(test_yield_cooperative),
+			 ztest_unit_test(test_sleep_cooperative),
+			 ztest_unit_test(test_sleep_wakeup_preemptible),
+			 ztest_unit_test(test_time_slicing_preemptible),
+			 ztest_unit_test(test_time_slicing_disable_preemptible),
+			 ztest_unit_test(test_lock_preemptible),
+			 ztest_unit_test(test_unlock_preemptible),
+			 ztest_unit_test(test_sched_is_preempt_thread),
+			 ztest_unit_test(test_slice_reset)
+			 );
 	ztest_run_test_suite(test_threads_scheduling);
 }
diff --git a/tests/kernel/threads/scheduling/schedule_api/src/test_sched_is_preempt_thread.c b/tests/kernel/threads/scheduling/schedule_api/src/test_sched_is_preempt_thread.c
index c73ed0247fc..5f4a39eef43 100644
--- a/tests/kernel/threads/scheduling/schedule_api/src/test_sched_is_preempt_thread.c
+++ b/tests/kernel/threads/scheduling/schedule_api/src/test_sched_is_preempt_thread.c
@@ -70,15 +70,15 @@ void test_sched_is_preempt_thread(void)
 
 	/*create preempt thread*/
 	k_tid_t tid = k_thread_create(&tdata, tstack, STACK_SIZE,
-		tpreempt_ctx, NULL, NULL, NULL,
-		K_PRIO_PREEMPT(1), 0, 0);
+				      tpreempt_ctx, NULL, NULL, NULL,
+				      K_PRIO_PREEMPT(1), 0, 0);
 	k_sem_take(&end_sema, K_FOREVER);
 	k_thread_abort(tid);
 
 	/*create coop thread*/
 	tid = k_thread_create(&tdata, tstack, STACK_SIZE,
-		tcoop_ctx, NULL, NULL, NULL,
-		K_PRIO_COOP(1), 0, 0);
+			      tcoop_ctx, NULL, NULL, NULL,
+			      K_PRIO_COOP(1), 0, 0);
 	k_sem_take(&end_sema, K_FOREVER);
 	k_thread_abort(tid);
 
diff --git a/tests/kernel/threads/scheduling/schedule_api/src/test_sched_timeslice_reset.c b/tests/kernel/threads/scheduling/schedule_api/src/test_sched_timeslice_reset.c
index ea25fe85b9f..13c46a9c49d 100644
--- a/tests/kernel/threads/scheduling/schedule_api/src/test_sched_timeslice_reset.c
+++ b/tests/kernel/threads/scheduling/schedule_api/src/test_sched_timeslice_reset.c
@@ -12,7 +12,7 @@ static K_THREAD_STACK_ARRAY_DEFINE(tstack, NUM_THREAD, STACK_SIZE);
 /* slice size in millisecond*/
 #define SLICE_SIZE 200
 /* busy for more than one slice*/
-#define BUSY_MS (SLICE_SIZE+20)
+#define BUSY_MS (SLICE_SIZE + 20)
 /* a half timeslice*/
 #define HALF_SLICE_SIZE (SLICE_SIZE >> 1)
 
@@ -21,9 +21,9 @@ K_SEM_DEFINE(sema, 0, NUM_THREAD);
 static s64_t elapsed_slice;
 /*expected elapsed duration*/
 static s64_t expected_slice[NUM_THREAD] = {
-	HALF_SLICE_SIZE,/* the ztest native thread taking a half timeslice*/
-	SLICE_SIZE,     /* the spawned thread taking a full timeslice, reset*/
-	SLICE_SIZE      /* the spawned thread taking a full timeslice, reset*/
+	HALF_SLICE_SIZE,        /* the ztest native thread taking a half timeslice*/
+	SLICE_SIZE,             /* the spawned thread taking a full timeslice, reset*/
+	SLICE_SIZE              /* the spawned thread taking a full timeslice, reset*/
 };
 static int thread_idx;
 
@@ -69,8 +69,8 @@ void test_slice_reset(void)
 		/* create delayed threads with equal preemptive priority*/
 		for (int i = 0; i < NUM_THREAD; i++) {
 			tid[i] = k_thread_create(&t[i], tstack[i], STACK_SIZE,
-				thread_tslice, NULL, NULL, NULL,
-				K_PRIO_PREEMPT(j), 0, 0);
+						 thread_tslice, NULL, NULL, NULL,
+						 K_PRIO_PREEMPT(j), 0, 0);
 		}
 		/* enable time slice*/
 		k_sched_time_slice_set(SLICE_SIZE, K_PRIO_PREEMPT(0));