diff --git a/YYModel/NSObject+YYModel.m b/YYModel/NSObject+YYModel.m
index 3d7c470..edcbff9 100644
--- a/YYModel/NSObject+YYModel.m
+++ b/YYModel/NSObject+YYModel.m
@@ -1701,7 +1701,7 @@ - (id)yy_modelInitWithCoder:(NSCoder *)aDecoder {
             YYEncodingType type = propertyMeta->_type & YYEncodingTypeMask;
             switch (type) {
                 case YYEncodingTypeObject: {
-                    id value = [aDecoder decodeObjectForKey:propertyMeta->_name];
+                    id value = [aDecoder decodeObjectOfClass:propertyMeta->_cls forKey:propertyMeta->_name];
                     ((void (*)(id, SEL, id))(void *) objc_msgSend)((id)self, propertyMeta->_setter, value);
                 } break;
                 case YYEncodingTypeSEL: {