diff --git a/Demo/CORTEX_LM3Sxxxx_IAR_Keil/FreeRTOSConfig.h b/Demo/CORTEX_LM3Sxxxx_IAR_Keil/FreeRTOSConfig.h
index e10386229..9eca479af 100644
--- a/Demo/CORTEX_LM3Sxxxx_IAR_Keil/FreeRTOSConfig.h
+++ b/Demo/CORTEX_LM3Sxxxx_IAR_Keil/FreeRTOSConfig.h
@@ -82,6 +82,7 @@
 
 #define configMAX_PRIORITIES		( ( unsigned portBASE_TYPE ) 5 )
 #define configMAX_CO_ROUTINE_PRIORITIES ( 2 )
+#define configQUEUE_REGISTRY_SIZE			10
 
 /* Set the following definitions to 1 to include the API function, or zero
 to exclude the API function. */