diff --git a/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_IMX/sleep.c b/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_IMX/sleep.c
index 86e9ee4500..310e96086e 100644
--- a/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_IMX/sleep.c
+++ b/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_IMX/sleep.c
@@ -23,13 +23,9 @@ extern bool serial_check_tx_ongoing();
 
 void hal_sleep(void)
 {
-    vPortPRE_SLEEP_PROCESSING(kCLOCK_ModeWait);
-
     __DSB();
     __WFI();
     __ISB();
-
-    vPortPOST_SLEEP_PROCESSING(kCLOCK_ModeWait);
 }
 
 void hal_deepsleep(void)