diff --git a/ports/espressif/boards/espressif_kaluga_1.3/mpconfigboard.h b/ports/espressif/boards/espressif_kaluga_1.3/mpconfigboard.h
index 8f89bfcbc4..459a5b3289 100644
--- a/ports/espressif/boards/espressif_kaluga_1.3/mpconfigboard.h
+++ b/ports/espressif/boards/espressif_kaluga_1.3/mpconfigboard.h
@@ -30,3 +30,6 @@
 #define MICROPY_HW_MCU_NAME         "ESP32S2"
 
 #define MICROPY_HW_NEOPIXEL (&pin_GPIO45)
+
+#define DEFAULT_I2C_BUS_SCL (&pin_GPIO7)
+#define DEFAULT_I2C_BUS_SDA (&pin_GPIO8)
diff --git a/ports/espressif/boards/espressif_kaluga_1.3/pins.c b/ports/espressif/boards/espressif_kaluga_1.3/pins.c
index dff98ceeb9..caa7ecd064 100644
--- a/ports/espressif/boards/espressif_kaluga_1.3/pins.c
+++ b/ports/espressif/boards/espressif_kaluga_1.3/pins.c
@@ -140,5 +140,7 @@ STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR_AUDIO_I2S1_LRCK_DAC1), MP_ROM_PTR(&pin_GPIO17) },
     { MP_ROM_QSTR(MP_QSTR_AUDIO_I2S1_BCLK_DAC2), MP_ROM_PTR(&pin_GPIO18) },
 
+    { MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&board_i2c_obj) },
+
 };
 MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);