diff --git a/examples/peripherals/uart/uart_echo_rs485/main/rs485_example.c b/examples/peripherals/uart/uart_echo_rs485/main/rs485_example.c
index 63ff45e30c..db087b913b 100644
--- a/examples/peripherals/uart/uart_echo_rs485/main/rs485_example.c
+++ b/examples/peripherals/uart/uart_echo_rs485/main/rs485_example.c
@@ -39,7 +39,7 @@
 
 // Read packet timeout
 #define PACKET_READ_TICS        (100 / portTICK_PERIOD_MS)
-#define ECHO_TASK_STACK_SIZE    (2048)
+#define ECHO_TASK_STACK_SIZE    (2*2048)
 #define ECHO_TASK_PRIO          (10)
 #define ECHO_UART_PORT          (CONFIG_ECHO_UART_PORT_NUM)