diff --git a/components/hal/esp32s3/include/hal/i2c_ll.h b/components/hal/esp32s3/include/hal/i2c_ll.h
index 999dd6d308..877a916130 100644
--- a/components/hal/esp32s3/include/hal/i2c_ll.h
+++ b/components/hal/esp32s3/include/hal/i2c_ll.h
@@ -571,7 +571,7 @@ static inline void i2c_ll_get_scl_timing(i2c_dev_t *hw, int *high_period, int *l
 static inline void i2c_ll_write_txfifo(i2c_dev_t *hw, uint8_t *ptr, uint8_t len)
 {
     for (int i = 0; i< len; i++) {
-        hw->fifo_data.val = ptr[i];
+        hw->fifo_data.data = ptr[i];
     }
 }
 
@@ -587,7 +587,7 @@ static inline void i2c_ll_write_txfifo(i2c_dev_t *hw, uint8_t *ptr, uint8_t len)
 static inline void i2c_ll_read_rxfifo(i2c_dev_t *hw, uint8_t *ptr, uint8_t len)
 {
     for(int i = 0; i < len; i++) {
-        ptr[i] = hw->fifo_data.val;
+        ptr[i] = hw->fifo_data.data;
     }
 }
 
diff --git a/components/soc/esp32s3/include/soc/i2c_struct.h b/components/soc/esp32s3/include/soc/i2c_struct.h
index 69c5d568d4..d68164946e 100644
--- a/components/soc/esp32s3/include/soc/i2c_struct.h
+++ b/components/soc/esp32s3/include/soc/i2c_struct.h
@@ -116,8 +116,8 @@ typedef volatile struct {
     } fifo_conf;
     union {
         struct {
-            uint8_t data;
-            uint8_t reserved[3];
+            uint32_t data                           :   8;
+            uint32_t reserved8                      :   24;
         };
         uint32_t val;
     } fifo_data;