diff --git a/FreeRTOS/Demo/CORTEX_M3_MPS2_QEMU_GCC/FreeRTOSConfig.h b/FreeRTOS/Demo/CORTEX_M3_MPS2_QEMU_GCC/FreeRTOSConfig.h
index 441254c5..f1f72276 100644
--- a/FreeRTOS/Demo/CORTEX_M3_MPS2_QEMU_GCC/FreeRTOSConfig.h
+++ b/FreeRTOS/Demo/CORTEX_M3_MPS2_QEMU_GCC/FreeRTOSConfig.h
@@ -51,7 +51,7 @@ extern void vAssertCalled( void );
 #define configUSE_IDLE_HOOK                              1
 #define configUSE_TICK_HOOK                              1
 #define configUSE_DAEMON_TASK_STARTUP_HOOK               0
-#define configCPU_CLOCK_HZ                               ( ( unsigned long ) 62500000 ) // icount shift 4
+#define configCPU_CLOCK_HZ                               ( ( unsigned long ) 6250000 ) // icount shift 4 // modified
 #define configTICK_RATE_HZ                               ( ( TickType_t ) 1000 )
 #define configMINIMAL_STACK_SIZE                         ( ( unsigned short ) 2000 )
 #define configTOTAL_HEAP_SIZE                            ( ( size_t ) ( 900 ) )