diff --git a/README.md b/README.md
index c8cb64d..264f38a 100644
--- a/README.md
+++ b/README.md
@@ -5,12 +5,17 @@
 1. Support of any data types.
 2. The maximum size of the veсtor is 255 elements.
 
+## Dependencies
+
+1. [zh_avr_free_rtos](http://git.zh.com.ru/avr_libraries/zh_avr_free_rtos)
+
 ## Using
 
 In an existing project, run the following command to install the component:
 
 ```text
 cd ../your_project/lib
+git clone http://git.zh.com.ru/avr_libraries/zh_avr_free_rtos
 git clone http://git.zh.com.ru/avr_libraries/zh_avr_vector
 ```
 
@@ -37,66 +42,61 @@ int usart(char byte, FILE *stream)
     while ((UCSR0A & (1 << UDRE0)) == 0)
     {
     }
-	UDR0 = byte;
-	return 0;
+    UDR0 = byte;
+    return 0;
 }
 FILE uart = FDEV_SETUP_STREAM(usart, NULL, _FDEV_SETUP_WRITE);
 
 void vector_example_task(void *pvParameters)
 {
-	zh_avr_vector_t vector = {0};
-	char example[10] = {0};
-	for (;;)
-	{
-		printf("Ponter Size %d.\n", sizeof(void *));
-		printf("Free Heap %d.\n", xPortGetFreeHeapSize());
-		zh_avr_vector_init(&vector, sizeof(example));
-		printf("Initial vector size is: %d\n", zh_avr_vector_get_size(&vector));
-		strcpy(example, "Item 1");
-		zh_avr_vector_push_back(&vector, &example);
-		strcpy(example, "Item 2");
-		zh_avr_vector_push_back(&vector, &example);
-		strcpy(example, "Item 3");
-		zh_avr_vector_push_back(&vector, &example);
-		strcpy(example, "Item 4");
-		zh_avr_vector_push_back(&vector, &example);
-		strcpy(example, "Item 5");
-		zh_avr_vector_push_back(&vector, &example);
-		printf("Add 5 items. New vector size is: %d\n", zh_avr_vector_get_size(&vector));
-		for (uint16_t i = 0; i < zh_avr_vector_get_size(&vector); ++i)
-		{
-			printf("Item position %d is: %s\n", i, (char *)zh_avr_vector_get_item(&vector, i));
-		}
-		strcpy(example, "Item 6");
-		zh_avr_vector_change_item(&vector, 3, &example);
-		printf("Change item on 3 position.\n");
-		for (uint16_t i = 0; i < zh_avr_vector_get_size(&vector); ++i)
-		{
-			printf("Item position %d is: %s\n", i, (char *)zh_avr_vector_get_item(&vector, i));
-		}
-		zh_avr_vector_delete_item(&vector, 2);
-		printf("Delete item on 2 position. New vector size is: %d\n", zh_avr_vector_get_size(&vector));
-		for (uint16_t i = 0; i < zh_avr_vector_get_size(&vector); ++i)
-		{
-			printf("Item position %d is: %s\n", i, (char *)zh_avr_vector_get_item(&vector, i));
-		}
-		zh_avr_vector_free(&vector);
-		printf("Task Remaining Stack Size %d.\n", uxTaskGetStackHighWaterMark(NULL));
-		printf("Free Heap %d.\n", xPortGetFreeHeapSize());
-		vTaskDelay(5000 / portTICK_PERIOD_MS);
-	}
-	vTaskDelete(NULL);
+    zh_avr_vector_t vector = {0};
+    char example[10] = {0};
+    printf("Free Heap %d.\n", xPortGetFreeHeapSize());
+    zh_avr_vector_init(&vector, sizeof(example));
+    printf("Initial vector size is: %d\n", zh_avr_vector_get_size(&vector));
+    strcpy(example, "Item 1");
+    zh_avr_vector_push_back(&vector, &example);
+    strcpy(example, "Item 2");
+    zh_avr_vector_push_back(&vector, &example);
+    strcpy(example, "Item 3");
+    zh_avr_vector_push_back(&vector, &example);
+    strcpy(example, "Item 4");
+    zh_avr_vector_push_back(&vector, &example);
+    strcpy(example, "Item 5");
+    zh_avr_vector_push_back(&vector, &example);
+    printf("Add 5 items. New vector size is: %d\n", zh_avr_vector_get_size(&vector));
+    for (uint16_t i = 0; i < zh_avr_vector_get_size(&vector); ++i)
+    {
+        printf("Item position %d is: %s\n", i, (char *)zh_avr_vector_get_item(&vector, i));
+    }
+    strcpy(example, "Item 6");
+    zh_avr_vector_change_item(&vector, 3, &example);
+    printf("Change item on 3 position.\n");
+    for (uint16_t i = 0; i < zh_avr_vector_get_size(&vector); ++i)
+    {
+        printf("Item position %d is: %s\n", i, (char *)zh_avr_vector_get_item(&vector, i));
+    }
+    zh_avr_vector_delete_item(&vector, 2);
+    printf("Delete item on 2 position. New vector size is: %d\n", zh_avr_vector_get_size(&vector));
+    for (uint16_t i = 0; i < zh_avr_vector_get_size(&vector); ++i)
+    {
+        printf("Item position %d is: %s\n", i, (char *)zh_avr_vector_get_item(&vector, i));
+    }
+    zh_avr_vector_free(&vector);
+    printf("Task Remaining Stack Size %d.\n", uxTaskGetStackHighWaterMark(NULL));
+    printf("Free Heap %d.\n", xPortGetFreeHeapSize());
+    vTaskDelete(NULL);
 }
 
 int main(void)
 {
-	UBRR0H = (BAUD_PRESCALE >> 8);
-	UBRR0L = BAUD_PRESCALE;
-	UCSR0B = (1 << RXEN0) | (1 << TXEN0);
-	UCSR0C = (1 << UCSZ01) | (1 << UCSZ00);
-	stdout = &uart;
-	xTaskCreate(vector_example_task, "vector example task", 200, NULL, tskIDLE_PRIORITY, NULL);
-	vTaskStartScheduler();
-	return 0;
+    UBRR0H = (BAUD_PRESCALE >> 8);
+    UBRR0L = BAUD_PRESCALE;
+    UCSR0B = (1 << RXEN0) | (1 << TXEN0);
+    UCSR0C = (1 << UCSZ01) | (1 << UCSZ00);
+    stdout = &uart;
+    xTaskCreate(vector_example_task, "vector example task", 136, NULL, tskIDLE_PRIORITY, NULL);
+    vTaskStartScheduler();
+    return 0;
 }
 ```
diff --git a/version.txt b/version.txt
index afaf360..359a5b9 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-1.0.0
\ No newline at end of file
+2.0.0
\ No newline at end of file
diff --git a/zh_avr_vector.c b/zh_avr_vector.c
index 8101e14..e0959c8 100755
--- a/zh_avr_vector.c
+++ b/zh_avr_vector.c
@@ -23,11 +23,12 @@ avr_err_t zh_avr_vector_free(zh_avr_vector_t *vector)
 {
     ZH_ERROR_CHECK(vector != NULL, AVR_ERR_INVALID_ARG);
     ZH_ERROR_CHECK(vector->status != false, AVR_ERR_INVALID_STATE);
-    for (uint16_t i = 0; i < vector->size; ++i)
+    for (uint8_t i = 0; i < vector->size; ++i)
     {
         vPortFree(vector->items[i]);
     }
     vector->status = false;
+    vPortFree(vector->items);
     return AVR_OK;
 }
 
@@ -90,7 +91,7 @@ avr_err_t zh_avr_vector_delete_item(zh_avr_vector_t *vector, uint8_t index)
             vector->items[i + 1] = NULL;
         }
         --vector->size;
-        _resize(vector, vector->capacity - 1);
+        ZH_ERROR_CHECK((_resize(vector, vector->capacity - 1) != AVR_ERR_NO_MEM), AVR_ERR_NO_MEM);
         return AVR_OK;
     }
     return AVR_FAIL;