diff --git a/tests/kernel/tickless/tickless_concept/src/main.c b/tests/kernel/tickless/tickless_concept/src/main.c
index d0b39b97cf3..49b108ff99f 100644
--- a/tests/kernel/tickless/tickless_concept/src/main.c
+++ b/tests/kernel/tickless/tickless_concept/src/main.c
@@ -33,7 +33,7 @@ static struct k_thread tdata[NUM_THREAD];
 	do {				       \
 		u32_t t = k_uptime_get_32();   \
 		while (t == k_uptime_get_32()) \
-			posix_halt_cpu();      \
+			k_busy_wait(50);       \
 	} while (0)
 #else
 #define ALIGN_MS_BOUNDARY()		       \