diff --git a/lib/std/fs/File.zig b/lib/std/fs/File.zig
index 2791642ac714d0df23ade80f2951d514a16d6602..7ad71ad274cc01b1c4b9762f96ab39dab852d324 100644
--- a/lib/std/fs/File.zig
+++ b/lib/std/fs/File.zig
@@ -1351,8 +1351,7 @@ pub const Reader = struct {
                 }
                 r.pos += n;
                 if (n > data_size) {
-                    io_reader.seek = 0;
-                    io_reader.end = n - data_size;
+                    io_reader.end += n - data_size;
                     return data_size;
                 }
                 return n;
@@ -1386,8 +1385,7 @@ pub const Reader = struct {
                 }
                 r.pos += n;
                 if (n > data_size) {
-                    io_reader.seek = 0;
-                    io_reader.end = n - data_size;
+                    io_reader.end += n - data_size;
                     return data_size;
                 }
                 return n;