diff --git a/include/task.h b/include/task.h
index 193d242f52..4d1643dc61 100644
--- a/include/task.h
+++ b/include/task.h
@@ -978,7 +978,7 @@ TickType_t xTaskPeriodicDelay( TickType_t * const pxPreviousWakeTime,
  * void vTaskFunction( void * pvParameters )
  * {
  * TickType_t xLastWakeTime;
- * const TickType_t xFrequency = 10;
+ * const TickType_t xPeriod = 10;
  * BaseType_t xWasDelayed;
  *
  *     // Initialise the xLastWakeTime variable with the current time.
@@ -986,7 +986,7 @@ TickType_t xTaskPeriodicDelay( TickType_t * const pxPreviousWakeTime,
  *     for( ;; )
  *     {
  *         // Wait for the next cycle.
- *         xWasDelayed = xTaskDelayUntil( &xLastWakeTime, xFrequency );
+ *         xWasDelayed = xTaskDelayUntil( &xLastWakeTime, xPeriod );
  *
  *         // Perform action here. xWasDelayed value can be used to determine
  *         // whether a deadline was missed if the code here took too long.