diff --git a/portable/MPLAB/PIC32MX/port.c b/portable/MPLAB/PIC32MX/port.c
index 73a757b79..386b98b0f 100644
--- a/portable/MPLAB/PIC32MX/port.c
+++ b/portable/MPLAB/PIC32MX/port.c
@@ -159,7 +159,8 @@ const StackType_t * const xISRStackTop = &( xISRStack[ ( configISR_STACK_SIZE &
  */
 StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, void *pvParameters )
 {
-	/* Ensure 8 byte alignment is maintained when leaving this function. */
+	/* Ensure 8 byte alignment is maintained when the context is popped from
+	 * stack. The size of the context is 33 words (132 bytes). */
 	pxTopOfStack--;
 	pxTopOfStack--;