diff --git a/extmod/vfs_fat_file.c b/extmod/vfs_fat_file.c
index 305d2d2f16..ecc9ed70f9 100644
--- a/extmod/vfs_fat_file.c
+++ b/extmod/vfs_fat_file.c
@@ -35,6 +35,7 @@
 #include "py/nlr.h"
 #include "py/runtime.h"
 #include "py/stream.h"
+#include "py/mperrno.h"
 #include "lib/fatfs/ff.h"
 #include "extmod/vfs_fat_file.h"
 
@@ -49,25 +50,25 @@ extern const mp_obj_type_t mp_type_textio;
 // this table converts from FRESULT to POSIX errno
 const byte fresult_to_errno_table[20] = {
     [FR_OK] = 0,
-    [FR_DISK_ERR] = EIO,
-    [FR_INT_ERR] = EIO,
-    [FR_NOT_READY] = EBUSY,
-    [FR_NO_FILE] = ENOENT,
-    [FR_NO_PATH] = ENOENT,
-    [FR_INVALID_NAME] = EINVAL,
-    [FR_DENIED] = EACCES,
-    [FR_EXIST] = EEXIST,
-    [FR_INVALID_OBJECT] = EINVAL,
-    [FR_WRITE_PROTECTED] = EROFS,
-    [FR_INVALID_DRIVE] = ENODEV,
-    [FR_NOT_ENABLED] = ENODEV,
-    [FR_NO_FILESYSTEM] = ENODEV,
-    [FR_MKFS_ABORTED] = EIO,
-    [FR_TIMEOUT] = EIO,
-    [FR_LOCKED] = EIO,
-    [FR_NOT_ENOUGH_CORE] = ENOMEM,
-    [FR_TOO_MANY_OPEN_FILES] = EMFILE,
-    [FR_INVALID_PARAMETER] = EINVAL,
+    [FR_DISK_ERR] = MP_EIO,
+    [FR_INT_ERR] = MP_EIO,
+    [FR_NOT_READY] = MP_EBUSY,
+    [FR_NO_FILE] = MP_ENOENT,
+    [FR_NO_PATH] = MP_ENOENT,
+    [FR_INVALID_NAME] = MP_EINVAL,
+    [FR_DENIED] = MP_EACCES,
+    [FR_EXIST] = MP_EEXIST,
+    [FR_INVALID_OBJECT] = MP_EINVAL,
+    [FR_WRITE_PROTECTED] = MP_EROFS,
+    [FR_INVALID_DRIVE] = MP_ENODEV,
+    [FR_NOT_ENABLED] = MP_ENODEV,
+    [FR_NO_FILESYSTEM] = MP_ENODEV,
+    [FR_MKFS_ABORTED] = MP_EIO,
+    [FR_TIMEOUT] = MP_EIO,
+    [FR_LOCKED] = MP_EIO,
+    [FR_NOT_ENOUGH_CORE] = MP_ENOMEM,
+    [FR_TOO_MANY_OPEN_FILES] = MP_EMFILE,
+    [FR_INVALID_PARAMETER] = MP_EINVAL,
 };
 
 typedef struct _pyb_file_obj_t {
@@ -101,7 +102,7 @@ STATIC mp_uint_t file_obj_write(mp_obj_t self_in, const void *buf, mp_uint_t siz
     }
     if (sz_out != size) {
         // The FatFS documentation says that this means disk full.
-        *errcode = ENOSPC;
+        *errcode = MP_ENOSPC;
         return MP_STREAM_ERROR;
     }
     return sz_out;
@@ -140,7 +141,7 @@ STATIC mp_uint_t file_obj_ioctl(mp_obj_t o_in, mp_uint_t request, uintptr_t arg,
 
             case 1: // SEEK_CUR
                 if (s->offset != 0) {
-                    *errcode = ENOTSUP;
+                    *errcode = MP_EOPNOTSUPP;
                     return MP_STREAM_ERROR;
                 }
                 // no-operation
@@ -155,7 +156,7 @@ STATIC mp_uint_t file_obj_ioctl(mp_obj_t o_in, mp_uint_t request, uintptr_t arg,
         return 0;
 
     } else {
-        *errcode = EINVAL;
+        *errcode = MP_EINVAL;
         return MP_STREAM_ERROR;
     }
 }