diff --git a/Src/stm32f7xx_it.c b/Src/stm32f7xx_it.c
index 80bacf7..7b44643 100644
--- a/Src/stm32f7xx_it.c
+++ b/Src/stm32f7xx_it.c
@@ -45,7 +45,6 @@
 	extern uint16_t UART_rec_incr, UART_header, COMMAND[CL_16];
 	extern uint8_t uart_buf, flg_tmt, CPU_state, State_Data[2], UART_transmission_request, u_tx_flg, TIM10_coflag;
 	extern  task_t task;
-	extern task_state;
 	extern LD_Blinker_StateTypeDef LD_blinker;
 /* USER CODE END PV */