diff --git a/README.md b/README.md
index 3dba74d..659759e 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,7 @@
 ## Dependencies
 
 1. [zh_avr_free_rtos](http://git.zh.com.ru/avr_libraries/zh_avr_free_rtos)
+2. [zh_avr_common](http://git.zh.com.ru/avr_libraries/zh_avr_common)
 
 ## Using
 
@@ -17,6 +18,7 @@ In an existing project, run the following command to install the component:
 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
+git clone http://git.zh.com.ru/avr_libraries/zh_avr_common
 ```
 
 In the application, add the component:
diff --git a/include/zh_avr_vector.h b/include/zh_avr_vector.h
index e04a740..28d2d48 100755
--- a/include/zh_avr_vector.h
+++ b/include/zh_avr_vector.h
@@ -6,30 +6,13 @@
 #include "stdint.h"
 #include "string.h"
 #include "stdbool.h"
+#include "avr_err.h"
 
 #ifdef __cplusplus
 extern "C"
 {
 #endif
 
-    typedef enum
-    {
-        AVR_FAIL = -1,
-        AVR_OK,
-        AVR_ERR_NO_MEM,
-        AVR_ERR_INVALID_ARG,
-        AVR_ERR_INVALID_STATE,
-        AVR_ERR_INVALID_SIZE,
-        AVR_ERR_NOT_FOUND,
-        AVR_ERR_NOT_SUPPORTED,
-        AVR_ERR_TIMEOUT,
-        AVR_ERR_INVALID_RESPONSE,
-        AVR_ERR_INVALID_CRC,
-        AVR_ERR_INVALID_VERSION,
-        AVR_ERR_NOT_FINISHED,
-        AVR_ERR_NOT_ALLOWED
-    } avr_err_t;
-
     typedef struct // Main structure of vector data.
     {
         void **items;     // Array of pointers of vector items.
diff --git a/version.txt b/version.txt
index 359a5b9..50aea0e 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-2.0.0
\ No newline at end of file
+2.1.0
\ No newline at end of file
diff --git a/zh_avr_vector.c b/zh_avr_vector.c
index e0959c8..edbe4f1 100755
--- a/zh_avr_vector.c
+++ b/zh_avr_vector.c
@@ -1,11 +1,5 @@
 #include "zh_avr_vector.h"
 
-#define ZH_ERROR_CHECK(cond, err, ...) \
-    if (!(cond))                       \
-    {                                  \
-        return err;                    \
-    }
-
 static avr_err_t _resize(zh_avr_vector_t *vector, uint8_t capacity);
 
 avr_err_t zh_avr_vector_init(zh_avr_vector_t *vector, uint8_t unit)