diff --git a/sam3s_example/atmel_softpack_libraries/usb/device/core/USBD.c b/sam3s_example/atmel_softpack_libraries/usb/device/core/USBD.c
index cdd668f4..3630c05f 100644
--- a/sam3s_example/atmel_softpack_libraries/usb/device/core/USBD.c
+++ b/sam3s_example/atmel_softpack_libraries/usb/device/core/USBD.c
@@ -91,8 +91,7 @@ void USBD_SuspendHandler(void)
         USBD_HAL_Suspend();
 
         /* Invoke the User Suspended callback (Suspend System?) */
-        if (USBDCallbacks_Suspended)
-            USBDCallbacks_Suspended();
+        USBDCallbacks_Suspended();
     }
 }
 
@@ -109,8 +108,7 @@ void USBD_ResumeHandler(void)
         deviceState = previousDeviceState;
         if (deviceState >= USBD_STATE_DEFAULT) {
             /* Invoke the Resume callback */
-            if (USBDCallbacks_Resumed)
-                USBDCallbacks_Resumed();
+            USBDCallbacks_Resumed();
         }
     }
 }
@@ -130,8 +128,7 @@ void USBD_ResetHandler()
     USBD_HAL_ResetEPs(0xFFFFFFFF, USBD_STATUS_RESET, 0);
     USBD_ConfigureEndpoint(0);
     /* Invoke the Reset callback */
-    if (USBDCallbacks_Reset)
-        USBDCallbacks_Reset();
+    USBDCallbacks_Reset();
 }
 
 /**
@@ -148,7 +145,7 @@ void USBD_RequestHandler(uint8_t bEndpoint,
         TRACE_WARNING("EP%d request not supported, default EP only",
                       bEndpoint);
     }
-    else if (USBDCallbacks_RequestReceived) {
+    else {
         USBDCallbacks_RequestReceived(pRequest);
     }
 }
@@ -365,8 +362,7 @@ void USBD_Init(void)
     previousDeviceState = USBD_STATE_POWERED;
 
     /* Upper Layer Initialize */
-    if (USBDCallbacks_Initialized)
-        USBDCallbacks_Initialized();
+    USBDCallbacks_Initialized();
     TRACE_DEBUG("%s\n\r", "..");
 }