diff --git a/ports/cc3200/mpconfigport.h b/ports/cc3200/mpconfigport.h
index f1ba4bedd0..3e8498e380 100644
--- a/ports/cc3200/mpconfigport.h
+++ b/ports/cc3200/mpconfigport.h
@@ -155,9 +155,6 @@
 #define MICROPY_MAKE_POINTER_CALLABLE(p)            ((void *)((mp_uint_t)(p) | 1))
 #define MP_SSIZE_MAX                                (0x7FFFFFFF)
 
-#define UINT_FMT                                    "%u"
-#define INT_FMT                                     "%d"
-
 typedef int32_t mp_int_t;                           // must be pointer size
 typedef unsigned int mp_uint_t;                     // must be pointer size
 typedef long mp_off_t;
diff --git a/ports/esp32/mpconfigport.h b/ports/esp32/mpconfigport.h
index a6f103cdef..721f22de11 100644
--- a/ports/esp32/mpconfigport.h
+++ b/ports/esp32/mpconfigport.h
@@ -326,9 +326,6 @@ void *esp_native_code_commit(void *, size_t, void *);
 #define MICROPY_WRAP_MP_SCHED_EXCEPTION(f) IRAM_ATTR f
 #define MICROPY_WRAP_MP_SCHED_KEYBOARD_INTERRUPT(f) IRAM_ATTR f
 
-#define UINT_FMT "%u"
-#define INT_FMT "%d"
-
 typedef int32_t mp_int_t; // must be pointer size
 typedef uint32_t mp_uint_t; // must be pointer size
 typedef long mp_off_t;
diff --git a/ports/esp8266/mpconfigport.h b/ports/esp8266/mpconfigport.h
index 03f3bb643d..bc29571902 100644
--- a/ports/esp8266/mpconfigport.h
+++ b/ports/esp8266/mpconfigport.h
@@ -150,9 +150,6 @@
 
 #define MP_SSIZE_MAX (0x7fffffff)
 
-#define UINT_FMT "%u"
-#define INT_FMT "%d"
-
 typedef int32_t mp_int_t; // must be pointer size
 typedef uint32_t mp_uint_t; // must be pointer size
 typedef long mp_off_t;
diff --git a/ports/nrf/mpconfigport.h b/ports/nrf/mpconfigport.h
index d52b5745d4..963e1e8836 100644
--- a/ports/nrf/mpconfigport.h
+++ b/ports/nrf/mpconfigport.h
@@ -335,8 +335,6 @@ void *nrf_native_code_commit(void *, unsigned int, void *);
 
 #define MP_SSIZE_MAX (0x7fffffff)
 
-#define UINT_FMT "%u"
-#define INT_FMT "%d"
 #define HEX2_FMT "%02x"
 
 typedef int mp_int_t; // must be pointer size
diff --git a/ports/pic16bit/mpconfigport.h b/ports/pic16bit/mpconfigport.h
index d80f7edb9e..7e6e1c4e02 100644
--- a/ports/pic16bit/mpconfigport.h
+++ b/ports/pic16bit/mpconfigport.h
@@ -77,8 +77,6 @@
 
 #define MICROPY_MAKE_POINTER_CALLABLE(p) ((void *)((mp_uint_t)(p)))
 
-#define UINT_FMT "%u"
-#define INT_FMT "%d"
 typedef int mp_int_t; // must be pointer size
 typedef unsigned int mp_uint_t; // must be pointer size
 
diff --git a/ports/renesas-ra/mpconfigport.h b/ports/renesas-ra/mpconfigport.h
index 8a116269bb..868cdbc7d6 100644
--- a/ports/renesas-ra/mpconfigport.h
+++ b/ports/renesas-ra/mpconfigport.h
@@ -234,8 +234,6 @@
 
 // Assume that if we already defined the obj repr then we also defined these items
 #ifndef MICROPY_OBJ_REPR
-#define UINT_FMT "%u"
-#define INT_FMT "%d"
 typedef int mp_int_t; // must be pointer size
 typedef unsigned int mp_uint_t; // must be pointer size
 #endif
diff --git a/ports/stm32/boards/ARDUINO_GIGA/mpconfigboard.h b/ports/stm32/boards/ARDUINO_GIGA/mpconfigboard.h
index 44f6ce66bc..17d338fdc3 100644
--- a/ports/stm32/boards/ARDUINO_GIGA/mpconfigboard.h
+++ b/ports/stm32/boards/ARDUINO_GIGA/mpconfigboard.h
@@ -12,8 +12,6 @@
 #define MICROPY_PY_NETWORK_HOSTNAME_DEFAULT "mpy-giga-r1-wifi"
 
 #define MICROPY_OBJ_REPR            (MICROPY_OBJ_REPR_C)
-#define UINT_FMT                    "%u"
-#define INT_FMT                     "%d"
 typedef int mp_int_t;               // must be pointer size
 typedef unsigned int mp_uint_t;     // must be pointer size
 
diff --git a/ports/stm32/boards/ARDUINO_NICLA_VISION/mpconfigboard.h b/ports/stm32/boards/ARDUINO_NICLA_VISION/mpconfigboard.h
index 47bf1be23d..1be6189548 100644
--- a/ports/stm32/boards/ARDUINO_NICLA_VISION/mpconfigboard.h
+++ b/ports/stm32/boards/ARDUINO_NICLA_VISION/mpconfigboard.h
@@ -12,8 +12,6 @@
 #define MICROPY_PY_NETWORK_HOSTNAME_DEFAULT "mpy-nicla-vision"
 
 #define MICROPY_OBJ_REPR            (MICROPY_OBJ_REPR_C)
-#define UINT_FMT                    "%u"
-#define INT_FMT                     "%d"
 typedef int mp_int_t;               // must be pointer size
 typedef unsigned int mp_uint_t;     // must be pointer size
 
diff --git a/ports/stm32/boards/ARDUINO_OPTA/mpconfigboard.h b/ports/stm32/boards/ARDUINO_OPTA/mpconfigboard.h
index f52c8a26a8..fc563b2800 100644
--- a/ports/stm32/boards/ARDUINO_OPTA/mpconfigboard.h
+++ b/ports/stm32/boards/ARDUINO_OPTA/mpconfigboard.h
@@ -12,8 +12,6 @@
 #define MICROPY_PY_NETWORK_HOSTNAME_DEFAULT "mpy-opta"
 
 #define MICROPY_OBJ_REPR            (MICROPY_OBJ_REPR_C)
-#define UINT_FMT                    "%u"
-#define INT_FMT                     "%d"
 typedef int mp_int_t;               // must be pointer size
 typedef unsigned int mp_uint_t;     // must be pointer size
 
diff --git a/ports/stm32/boards/ARDUINO_PORTENTA_H7/mpconfigboard.h b/ports/stm32/boards/ARDUINO_PORTENTA_H7/mpconfigboard.h
index a9ecf38fbf..d8818f257c 100644
--- a/ports/stm32/boards/ARDUINO_PORTENTA_H7/mpconfigboard.h
+++ b/ports/stm32/boards/ARDUINO_PORTENTA_H7/mpconfigboard.h
@@ -12,8 +12,6 @@
 #define MICROPY_PY_NETWORK_HOSTNAME_DEFAULT "mpy-portenta-h7"
 
 #define MICROPY_OBJ_REPR            (MICROPY_OBJ_REPR_C)
-#define UINT_FMT                    "%u"
-#define INT_FMT                     "%d"
 typedef int mp_int_t;               // must be pointer size
 typedef unsigned int mp_uint_t;     // must be pointer size
 
diff --git a/ports/stm32/mpconfigport.h b/ports/stm32/mpconfigport.h
index b910188c5a..35deb93c6a 100644
--- a/ports/stm32/mpconfigport.h
+++ b/ports/stm32/mpconfigport.h
@@ -230,8 +230,6 @@ extern const struct _mp_obj_type_t network_lan_type;
 
 // Assume that if we already defined the obj repr then we also defined these items
 #ifndef MICROPY_OBJ_REPR
-#define UINT_FMT "%u"
-#define INT_FMT "%d"
 typedef int mp_int_t; // must be pointer size
 typedef unsigned int mp_uint_t; // must be pointer size
 #endif
diff --git a/ports/webassembly/mpconfigport.h b/ports/webassembly/mpconfigport.h
index ab56162ca2..eea6f02a02 100644
--- a/ports/webassembly/mpconfigport.h
+++ b/ports/webassembly/mpconfigport.h
@@ -107,8 +107,6 @@
 // different targets may be defined in different ways - either as int
 // or as long. This requires different printf formatting specifiers
 // to print such value. So, we avoid int32_t and use int directly.
-#define UINT_FMT "%u"
-#define INT_FMT "%d"
 typedef int mp_int_t; // must be pointer size
 typedef unsigned mp_uint_t; // must be pointer size
 typedef long mp_off_t;