diff --git a/Demo/CORTEX_STM32F103_IAR/FreeRTOSConfig.h b/Demo/CORTEX_STM32F103_IAR/FreeRTOSConfig.h
index 982711b97..89aa08d6f 100644
--- a/Demo/CORTEX_STM32F103_IAR/FreeRTOSConfig.h
+++ b/Demo/CORTEX_STM32F103_IAR/FreeRTOSConfig.h
@@ -93,7 +93,7 @@ to exclude the API function. */
 /* This is the raw value as per the Cortex-M3 NVIC.  Values can be 255
 (lowest) to 0 (1?) (highest). */
 #define configKERNEL_INTERRUPT_PRIORITY 		255
-#define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xa0, or priority 5. */
+#define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xb0, or priority 11. */
 
 
 /* This is the value being used as per the ST library which permits 16
diff --git a/Demo/CORTEX_STM32F103_Keil/FreeRTOSConfig.h b/Demo/CORTEX_STM32F103_Keil/FreeRTOSConfig.h
index 982711b97..89aa08d6f 100644
--- a/Demo/CORTEX_STM32F103_Keil/FreeRTOSConfig.h
+++ b/Demo/CORTEX_STM32F103_Keil/FreeRTOSConfig.h
@@ -93,7 +93,7 @@ to exclude the API function. */
 /* This is the raw value as per the Cortex-M3 NVIC.  Values can be 255
 (lowest) to 0 (1?) (highest). */
 #define configKERNEL_INTERRUPT_PRIORITY 		255
-#define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xa0, or priority 5. */
+#define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xb0, or priority 11. */
 
 
 /* This is the value being used as per the ST library which permits 16
diff --git a/Demo/CORTEX_STM32F103_Primer_GCC/FreeRTOSConfig.h b/Demo/CORTEX_STM32F103_Primer_GCC/FreeRTOSConfig.h
index ef808e84f..a8bdfb699 100644
--- a/Demo/CORTEX_STM32F103_Primer_GCC/FreeRTOSConfig.h
+++ b/Demo/CORTEX_STM32F103_Primer_GCC/FreeRTOSConfig.h
@@ -97,7 +97,7 @@ to exclude the API function. */
 /* This is the raw value as per the Cortex-M3 NVIC.  Values can be 255
 (lowest) to 0 (1?) (highest). */
 #define configKERNEL_INTERRUPT_PRIORITY 		255
-#define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xa0, or priority 5. */
+#define configMAX_SYSCALL_INTERRUPT_PRIORITY 	191 /* equivalent to 0xb0, or priority 11. */
 
 
 /* This is the value being used as per the ST library which permits 16