diff --git a/connectivity/drivers/emac/TARGET_ARM_SSG/COMPONENT_SMSC9220/smsc9220_emac.cpp b/connectivity/drivers/emac/TARGET_ARM_SSG/COMPONENT_SMSC9220/smsc9220_emac.cpp
index 80b74bd862..0e33d285b1 100644
--- a/connectivity/drivers/emac/TARGET_ARM_SSG/COMPONENT_SMSC9220/smsc9220_emac.cpp
+++ b/connectivity/drivers/emac/TARGET_ARM_SSG/COMPONENT_SMSC9220/smsc9220_emac.cpp
@@ -211,7 +211,7 @@ bool SMSC9220_EMAC::power_up()
                                    this));
 
     /* Initialize the hardware */
-    enum smsc9220_error_t init_successful = smsc9220_init(dev, &ThisThread::sleep_for);
+    enum smsc9220_error_t init_successful = smsc9220_init(dev, &thread_sleep_for);
     if (init_successful != SMSC9220_ERROR_NONE) {
         return false;
     }
@@ -237,7 +237,7 @@ bool SMSC9220_EMAC::power_up()
                                              &SMSC9220_EMAC::link_status_task));
 
     /* Allow the Link Status task to detect the initial link state */
-    ThisThread::sleep_for(10);
+    ThisThread::sleep_for(10ms);
     _link_status_task_handle = mbed::mbed_event_queue()->call_every(
                               LINK_STATUS_TASK_PERIOD_MS,
                               mbed::callback(this,
diff --git a/connectivity/drivers/emac/TARGET_ARM_SSG/COMPONENT_SMSC9220/smsc9220_emac_config.h b/connectivity/drivers/emac/TARGET_ARM_SSG/COMPONENT_SMSC9220/smsc9220_emac_config.h
index a96a008357..5f618308c5 100644
--- a/connectivity/drivers/emac/TARGET_ARM_SSG/COMPONENT_SMSC9220/smsc9220_emac_config.h
+++ b/connectivity/drivers/emac/TARGET_ARM_SSG/COMPONENT_SMSC9220/smsc9220_emac_config.h
@@ -36,7 +36,7 @@
 #define FLAG_RX                              1U
 #define LINK_STATUS_THREAD_PRIORITY          (osPriorityNormal)
 #define LINK_STATUS_THREAD_STACKSIZE         512U
-#define LINK_STATUS_TASK_PERIOD_MS           200U
+#define LINK_STATUS_TASK_PERIOD_MS           200ms
 #define PHY_STATE_LINK_DOWN                  false
 #define PHY_STATE_LINK_UP                    true
 #define CRC_LENGTH_BYTES                     4U