diff --git a/ports/espressif/boards/m5stack_atom_echo/mpconfigboard.h b/ports/espressif/boards/m5stack_atom_echo/mpconfigboard.h
index 25eaec1e52..7d67267897 100644
--- a/ports/espressif/boards/m5stack_atom_echo/mpconfigboard.h
+++ b/ports/espressif/boards/m5stack_atom_echo/mpconfigboard.h
@@ -31,9 +31,8 @@
 
 #define MICROPY_HW_NEOPIXEL         (&pin_GPIO27)
 
-#define CIRCUITPY_BOARD_I2C         (2)
-#define CIRCUITPY_BOARD_I2C_PIN     {{.scl = &pin_GPIO21, .sda = &pin_GPIO25}, \
-                                     {.scl = &pin_GPIO32, .sda = &pin_GPIO26}}
+#define CIRCUITPY_BOARD_I2C         (1)
+#define CIRCUITPY_BOARD_I2C_PIN     {{.scl = &pin_GPIO32, .sda = &pin_GPIO26}}
 
 // For entering safe mode
 #define CIRCUITPY_BOOT_BUTTON       (&pin_GPIO39)
diff --git a/ports/espressif/boards/m5stack_atom_echo/pins.c b/ports/espressif/boards/m5stack_atom_echo/pins.c
index 2b8044f07e..68b6389215 100644
--- a/ports/espressif/boards/m5stack_atom_echo/pins.c
+++ b/ports/espressif/boards/m5stack_atom_echo/pins.c
@@ -1,8 +1,6 @@
 #include "shared-bindings/board/__init__.h"
 #include "shared-module/displayio/__init__.h"
 
-CIRCUITPY_BOARD_BUS_SINGLETON(porta_i2c, i2c, 1)
-
 STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
     CIRCUITPYTHON_BOARD_DICT_STANDARD_ITEMS
 
@@ -39,8 +37,7 @@ STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
 
     { MP_ROM_QSTR(MP_QSTR_IR_LED), MP_ROM_PTR(&pin_GPIO12) },
 
-    { MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&board_i2c_obj) },
-    { MP_ROM_QSTR(MP_QSTR_PORTA_I2C), MP_ROM_PTR(&board_porta_i2c_obj) },
+    { MP_ROM_QSTR(MP_QSTR_PORTA_I2C), MP_ROM_PTR(&board_i2c_obj) },
 
 };
 MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);