diff --git a/lfs3.c b/lfs3.c
index 60a3bd80..ed33942a 100644
--- a/lfs3.c
+++ b/lfs3.c
@@ -14282,7 +14282,7 @@ failed:;
 // other file operations
 
 lfs3_soff_t lfs3_file_seek(lfs3_t *lfs3, lfs3_file_t *file,
-        lfs3_soff_t off, uint8_t whence) {
+        lfs3_soff_t off, uint32_t whence) {
     LFS3_ASSERT(lfs3_handle_isopen(lfs3, &file->b.h));
 
     // TODO check for out-of-range?
diff --git a/lfs3.h b/lfs3.h
index f9f97c7e..7e4c6213 100644
--- a/lfs3.h
+++ b/lfs3.h
@@ -1510,7 +1510,7 @@ lfs3_ssize_t lfs3_file_write(lfs3_t *lfs3, lfs3_file_t *file,
 // The change in position is determined by the offset and whence flag.
 // Returns the new position of the file, or a negative error code on failure.
 lfs3_soff_t lfs3_file_seek(lfs3_t *lfs3, lfs3_file_t *file,
-        lfs3_soff_t off, uint8_t whence);
+        lfs3_soff_t off, uint32_t whence);
 
 // Truncate/grow the size of the file to the specified size
 //