diff --git a/include/nuttx/can.h b/include/nuttx/can.h
index 1616681598..982a193106 100644
--- a/include/nuttx/can.h
+++ b/include/nuttx/can.h
@@ -326,7 +326,7 @@ struct can_frame
   uint8_t  __pad;   /* padding */
   uint8_t  __res0;  /* reserved / padding */
   uint8_t  __res1;  /* reserved / padding */
-  uint8_t  data[CAN_MAX_DLEN] aligned_data(8);
+  uint8_t  data[CAN_MAX_DLEN];
 };
 
 /* struct canfd_frame - CAN flexible data rate frame structure
@@ -345,7 +345,7 @@ struct canfd_frame
   uint8_t flags;   /* additional flags for CAN FD */
   uint8_t __res0;  /* reserved / padding */
   uint8_t __res1;  /* reserved / padding */
-  uint8_t data[CANFD_MAX_DLEN] aligned_data(8);
+  uint8_t data[CANFD_MAX_DLEN];
 };
 
 /* struct can_filter - CAN ID based filter in can_register().