diff --git a/lib/src/miscale.dart b/lib/src/miscale.dart
index ab2e47a..696633d 100644
--- a/lib/src/miscale.dart
+++ b/lib/src/miscale.dart
@@ -25,7 +25,9 @@
 //
 // STORED HISTORY (both scales) — on [kMiScaleHistoryChar], notify + write:
 //   host  `01 <user id u32 LE>`   how many records for this user
-//   scale `01 <count u16 LE>`
+//   scale `01 <count u16 LE>`      (the XMTZC05HM appends four more bytes,
+//                                  seen as `01 00 00 00` after a request for
+//                                  user 1; their meaning is not established)
 //   host  `02`                    send them (skipped when count is 0)
 //   scale records: 10-byte Scale 2 records, or 13-byte frames laid out as
 //         0x2A9C on the composition scale; a notification of one byte or
@@ -144,9 +146,14 @@ List<int> miScaleHistoryRequest(int userId) => [
       (userId >> 24) & 0xff,
     ];
 
-/// The record count in the scale's `01 <count u16 LE>` answer, or null.
+/// The record count in the scale's `01 <count u16 LE>` answer, or null. The
+/// Mi Body Composition Scale 2 (XMTZC05HM) answers with 7 bytes: the same
+/// three, then four more (seen as `01 00 00 00` after a request for user 1;
+/// whether that is the user id is not established, so it is not validated).
 int? miScaleHistoryCount(List<int> b) =>
-    b.length == 3 && b[0] == 0x01 ? b[1] | (b[2] << 8) : null;
+    (b.length == 3 || b.length == 7) && b[0] == 0x01
+        ? b[1] | (b[2] << 8)
+        : null;
 
 const List<int> kMiScaleHistorySend = [0x02];
 
diff --git a/test/thermometer_scale_test.dart b/test/thermometer_scale_test.dart
index b90ea3d..86904f4 100644
--- a/test/thermometer_scale_test.dart
+++ b/test/thermometer_scale_test.dart
@@ -141,6 +141,11 @@ void main() {
       expect(miScaleHistoryRequest(0x01020304), [1, 4, 3, 2, 1]);
       expect(miScaleHistoryCount([0x01, 0x02, 0x01]), 258);
       expect(miScaleHistoryCount([0x01, 0x02]), isNull);
+      // Captured from a real XMTZC05HM: counts 2, 3 and 4 (tail 01 00 00 00).
+      expect(miScaleHistoryCount([1, 2, 0, 1, 0, 0, 0]), 2);
+      expect(miScaleHistoryCount([1, 3, 0, 1, 0, 0, 0]), 3);
+      expect(miScaleHistoryCount([1, 4, 0, 1, 0, 0, 0]), 4);
+      expect(miScaleHistoryCount([1, 2, 0, 1, 0]), isNull);
       expect(miScaleHistoryDone([0x03]), isTrue);
       expect(miScaleHistoryDone([]), isTrue);
       expect(miScaleHistoryDone([0x03, 0]), isFalse);