diff --git a/drivers/can/Kconfig.loopback b/drivers/can/Kconfig.loopback
index b618da1ce8d..fd0d7731ef8 100644
--- a/drivers/can/Kconfig.loopback
+++ b/drivers/can/Kconfig.loopback
@@ -22,7 +22,7 @@ config CAN_MAX_FILTER
 
 config CAN_LOOPBACK_TX_THREAD_STACK_SIZE
 	int "TX thread stack size"
-	default 256
+	default 512
 	help
 	  Stack size of the TX thread.
 	  The TX thread calls the callbacks of the receiver