diff --git a/Demo/PIC32MX_MPLAB/main.c b/Demo/PIC32MX_MPLAB/main.c
index 33fc9bfde..f49e5b7ef 100644
--- a/Demo/PIC32MX_MPLAB/main.c
+++ b/Demo/PIC32MX_MPLAB/main.c
@@ -127,7 +127,7 @@ errors have been detected. */
 
 /* The rate at which the LED controlled by the 'check' task will flash when an
 error has been detected. */
-#define mainERROR_PERIOD 	( 500 )
+#define mainERROR_PERIOD 	( 500 / portTICK_RATE_MS )
 
 /* The priorities of the various demo application tasks. */
 #define mainCHECK_TASK_PRIORITY				( tskIDLE_PRIORITY + 4 )