diff --git a/FreeRTOS-Plus/Source/FreeRTOS-Plus-Trace/ConfigurationTemplate/trcHardwarePort.h b/FreeRTOS-Plus/Source/FreeRTOS-Plus-Trace/ConfigurationTemplate/trcHardwarePort.h
index 0e97b8ec1..0b6ccab54 100644
--- a/FreeRTOS-Plus/Source/FreeRTOS-Plus-Trace/ConfigurationTemplate/trcHardwarePort.h
+++ b/FreeRTOS-Plus/Source/FreeRTOS-Plus-Trace/ConfigurationTemplate/trcHardwarePort.h
@@ -103,6 +103,7 @@
  *****************************************************************************/
 
 #define PORT_NOT_SET                          -1
+#define PORT_APPLICATION_DEFINED			  -2
 
 /*** Officially supported hardware timer ports *******************************/
 #define PORT_HWIndependent                     0
@@ -370,6 +371,13 @@
 
     #define IRQ_PRIORITY_ORDER 0  // lower IRQ priority values are more significant
 
+#elif (SELECTED_PORT == PORT_APPLICATION_DEFINED)
+
+	#if !( defined (HWTC_COUNT_DIRECTION) && defined (HWTC_COUNT) && defined (HWTC_PERIOD) && defined (HWTC_DIVISOR) && defined (IRQ_PRIORITY_ORDER) )
+		#error SELECTED_PORT is PORT_APPLICATION_DEFINED but not all of the necessary constants have been defined.
+	#endif
+
+
 #elif (SELECTED_PORT != PORT_NOT_SET)
 
     #error "SELECTED_PORT had unsupported value!"