diff --git a/examples/device/mtp/src/mtp_fs_example.c b/examples/device/mtp/src/mtp_fs_example.c
index 73722fc4f..b4772f146 100644
--- a/examples/device/mtp/src/mtp_fs_example.c
+++ b/examples/device/mtp/src/mtp_fs_example.c
@@ -59,11 +59,11 @@ storage_info_t storage_info = {
   .free_space_in_bytes = 0, // calculated at runtime
   .free_space_in_objects = 0, // calculated at runtime
   .storage_description = {
-    .count = (TU_FIELD_SZIE(storage_info_t, storage_description)-1) / sizeof(uint16_t),
+    .count = (TU_FIELD_SIZE(storage_info_t, storage_description)-1) / sizeof(uint16_t),
     .utf16 = STORAGE_DESCRIPTRION
   },
   .volume_identifier = {
-    .count = (TU_FIELD_SZIE(storage_info_t, volume_identifier)-1) / sizeof(uint16_t),
+    .count = (TU_FIELD_SIZE(storage_info_t, volume_identifier)-1) / sizeof(uint16_t),
     .utf16 = VOLUME_IDENTIFIER
   }
 };
diff --git a/src/common/tusb_common.h b/src/common/tusb_common.h
index 12dea2183..2b095e238 100644
--- a/src/common/tusb_common.h
+++ b/src/common/tusb_common.h
@@ -35,7 +35,7 @@
 // Macros Helper
 //--------------------------------------------------------------------+
 #define TU_ARRAY_SIZE(_arr)   ( sizeof(_arr) / sizeof(_arr[0]) )
-#define TU_FIELD_SZIE(_type, _field)  (sizeof(((_type *)0)->_field))
+#define TU_FIELD_SIZE(_type, _field)  (sizeof(((_type *)0)->_field))
 #define TU_MIN(_x, _y)        ( ( (_x) < (_y) ) ? (_x) : (_y) )
 #define TU_MAX(_x, _y)        ( ( (_x) > (_y) ) ? (_x) : (_y) )
 #define TU_DIV_CEIL(n, d)     (((n) + (d) - 1) / (d))