diff --git a/moor/lib/src/runtime/data_class.dart b/moor/lib/src/runtime/data_class.dart
index f3c450f0..47dfb69c 100644
--- a/moor/lib/src/runtime/data_class.dart
+++ b/moor/lib/src/runtime/data_class.dart
@@ -118,6 +118,10 @@ class _DefaultValueSerializer extends ValueSerializer {
       }
     }
 
+    if (T == double && json is int) {
+      return json.toDouble() as T;
+    }
+
     return json as T;
   }
 
diff --git a/moor/test/data_class_test.dart b/moor/test/data_class_test.dart
index 1c9d1ae4..bfd6ccf9 100644
--- a/moor/test/data_class_test.dart
+++ b/moor/test/data_class_test.dart
@@ -18,6 +18,16 @@ void main() {
     expect(deserialized, equals(deserialized));
   });
 
+  test('can deserialize ints as doubles', () {
+    final entry = TableWithoutPKData.fromJson({
+      'notReallyAnId': 3,
+      'someFloat': 4,
+    });
+
+    expect(entry,
+        TableWithoutPKData(notReallyAnId: 3, someFloat: 4, custom: null));
+  });
+
   test('default serializer can be overridden globally', () {
     final old = moorRuntimeOptions.defaultSerializer;
     moorRuntimeOptions.defaultSerializer = _MySerializer();