diff --git a/FreeRTOS/Demo/CORTEX_M3_MPS2_QEMU_GCC/Makefile b/FreeRTOS/Demo/CORTEX_M3_MPS2_QEMU_GCC/Makefile
index 74be3371..cd36ffa8 100644
--- a/FreeRTOS/Demo/CORTEX_M3_MPS2_QEMU_GCC/Makefile
+++ b/FreeRTOS/Demo/CORTEX_M3_MPS2_QEMU_GCC/Makefile
@@ -187,6 +187,9 @@ endif
 ifeq ($(PARTITION_INPUT), 1)
     CFLAGS += -D PARTITION_INPUT=1
 endif
+ifeq ($(DELETE_RNG_STATE), 1)
+    CFLAGS += -D DELETE_RNG_STATE=1
+endif
 
 DEFINES :=  -DQEMU_SOC_MPS2 -DHEAP3
 
diff --git a/FreeRTOS/Demo/CORTEX_M3_MPS2_QEMU_GCC/main_copter.c b/FreeRTOS/Demo/CORTEX_M3_MPS2_QEMU_GCC/main_copter.c
index dba0cad6..4625a69b 100644
--- a/FreeRTOS/Demo/CORTEX_M3_MPS2_QEMU_GCC/main_copter.c
+++ b/FreeRTOS/Demo/CORTEX_M3_MPS2_QEMU_GCC/main_copter.c
@@ -15,6 +15,12 @@ volatile unsigned char FUZZ_INPUT[MAX_INPUT_BYTES] = {};
 volatile int INPUT_POINTERS[NUM_TASKS] = {};
 volatile uint32_t FUZZ_LENGTH = MAX_INPUT_BYTES;// ignored
 
+#ifdef DELETE_RNG_STATE
+#define RNG_RESET {RNG_STATES[task_id] = task_id;}
+#else
+#define RNG_RESET {}
+#endif
+
 __attribute__((noinline)) static void trigger_Qemu_break( void )
 {
     puts("Trigger");
@@ -27,9 +33,6 @@ __attribute__((noinline)) static void trigger_job_done( void )
 }
 
 static unsigned char fuzz_char_next(int tasknum) {
-#ifndef FUZZ_BYTES
-    return 255;
-#endif
 #ifdef PARTITION_INPUT
   if (INPUT_POINTERS[tasknum] == 0) {
       INPUT_POINTERS[tasknum] = tasknum * (MAX_INPUT_BYTES / NUM_TASKS);
@@ -54,6 +57,9 @@ static unsigned char fuzz_char_next(int tasknum) {
 
 volatile int RNG_STATES[NUM_TASKS] = {};
 static unsigned char next(int tasknum) {
+  #ifndef FUZZ_BYTES
+    return 255;
+  #endif
   RNG_STATES[tasknum] = RNG_FROM(RNG_STATES[tasknum]);
   unsigned char t = fuzz_char_next(tasknum);
   return RNG_STATES[tasknum] ^ (((int)t << 8) + (int)t);
@@ -170,6 +176,7 @@ static void prv_SignalGatherInitiateTask(void *pvParameters) {
   TickType_t xLastWakeTime = initial_release_time;
   const TickType_t xFrequency = 3 / portTICK_PERIOD_MS;
   do {
+    RNG_RESET
     // timing_start(0);
     xSemaphoreTake(xSemaphore_SPIBus, 1);
     WASTE_USEC(LONG_CALC);
@@ -191,6 +198,7 @@ static void prv_SignalGatherFinishedTask(void *pvParameters) {
   const int task_id = 1;
   trigger_job_done();
   do {
+    RNG_RESET
     ulTaskNotifyTake(pdTRUE, portMAX_DELAY);
     WASTE_USEC(LONG_CALC);
     xTaskNotify(xTask_SignalProcessingAttitudeTask, 0, eNoAction);
@@ -205,6 +213,7 @@ static void prv_SignalGatherTimeoutTask(void *pvParameters) {
   const int task_id = 2;
   trigger_job_done();
   do {
+    RNG_RESET
     ulTaskNotifyTake(pdTRUE, portMAX_DELAY);
     WASTE_USEC(LONG_CALC);
     xSemaphoreTake(xSemaphore_SPIBus, 1);
@@ -222,6 +231,7 @@ static void prv_SignalProcessingActuateTask(void *pvParameters) {
   const int task_id = 3;
   trigger_job_done();
   do {
+    RNG_RESET
     ulTaskNotifyTake(pdTRUE, portMAX_DELAY);
     WASTE_USEC(LONG_CALC);
     trigger_job_done();
@@ -232,6 +242,7 @@ static void prv_SignalProcessingAttitudeTask(void *pvParameters) {
   const int task_id = 4;
   trigger_job_done();
   do {
+    RNG_RESET
     ulTaskNotifyTake(pdTRUE, portMAX_DELAY);
     WASTE_USEC(LONG_CALC);
     // timing_end(0);
@@ -244,6 +255,7 @@ static void prv_FlightControlTask(void *pvParameters) {
   TickType_t xLastWakeTime = initial_release_time;
   const TickType_t xFrequency = 9 / portTICK_PERIOD_MS;
   do {
+    RNG_RESET
     // timing_start(1 | TIMING_POINT_IS_HIGHEST_PRIO);
     WASTE_USEC(LONG_CALC);
     xTaskNotify(xTask_FlightControlAttitudeTask, 0, eNoAction);
@@ -259,6 +271,7 @@ static void prv_FlightControlAttitudeTask(void *pvParameters) {
   const int task_id = 6;
   trigger_job_done();
   do {
+    RNG_RESET
     ulTaskNotifyTake(pdTRUE, portMAX_DELAY);
     WASTE_USEC(LONG_CALC);
     trigger_job_done();
@@ -269,6 +282,7 @@ static void prv_FlightControlActuateTask(void *pvParameters) {
   const int task_id = 7;
   trigger_job_done();
   do {
+    RNG_RESET
     ulTaskNotifyTake(pdTRUE, portMAX_DELAY);
     WASTE_USEC(LONG_CALC);
     trigger_job_done();
@@ -279,6 +293,7 @@ static void prv_MavlinkSendTask(void *pvParameters) {
   const int task_id = 8;
   trigger_job_done();
   do {
+    RNG_RESET
     ulTaskNotifyTake(pdTRUE, portMAX_DELAY);
     WASTE_USEC(LONG_CALC);
     xSemaphoreTake(xSemaphore_SPIBus, 1);
@@ -299,6 +314,7 @@ static void prv_CopterControlTask(void *pvParameters) {
   #endif
   trigger_job_done();
   do {
+    RNG_RESET
     #ifdef FUZZ_INT_ACTIVATION
     ulTaskNotifyTake(pdTRUE, portMAX_DELAY);
     #else
@@ -317,6 +333,7 @@ static void prv_CopterControlTask(void *pvParameters) {
 
 void ISR_0_Handler(void) {
   const int task_id = 10;
+  RNG_RESET
   // timing_start(2 | TIMING_POINT_START_INTERRUPT_FROM_IDLE);
   WASTE_USEC(SHORT_CALC);
   xTaskNotifyFromISR(xTask_CopterControlTask, 0, eNoAction, NULL);
@@ -328,6 +345,7 @@ static void prv_CopterControlWatchdogTask(void *pvParameters) {
   TickType_t xLastWakeTime = initial_release_time;
   const TickType_t xFrequency = 10 / portTICK_PERIOD_MS;
   do {
+    RNG_RESET
     WASTE_USEC(LONG_CALC);
     trigger_job_done();
     xTaskDelayUntil( &xLastWakeTime, xFrequency );