diff --git a/dbms/src/DataTypes/DataTypeNullable.cpp b/dbms/src/DataTypes/DataTypeNullable.cpp
index a687ce9a979..0eb82d6abdb 100644
--- a/dbms/src/DataTypes/DataTypeNullable.cpp
+++ b/dbms/src/DataTypes/DataTypeNullable.cpp
@@ -119,6 +119,33 @@ void DataTypeNullable::deserializeBinaryBulkWithMultipleStreams(
 }
 
 
+void DataTypeNullable::serializeBinary(const Field & field, WriteBuffer & ostr) const
+{
+    if (field.isNull())
+    {
+        writeBinary(true, ostr);
+    }
+    else
+    {
+        writeBinary(false, ostr);
+        nested_data_type->serializeBinary(field, ostr);
+    }
+}
+
+void DataTypeNullable::deserializeBinary(Field & field, ReadBuffer & istr) const
+{
+    bool is_null = false;
+    readBinary(is_null, istr);
+    if (!is_null)
+    {
+        nested_data_type->deserializeBinary(field, istr);
+    }
+    else
+    {
+        field = Null();
+    }
+}
+
 void DataTypeNullable::serializeBinary(const IColumn & column, size_t row_num, WriteBuffer & ostr) const
 {
     const ColumnNullable & col = assert_cast<const ColumnNullable &>(column);
diff --git a/dbms/src/DataTypes/DataTypeNullable.h b/dbms/src/DataTypes/DataTypeNullable.h
index 25afed61411..49b14eefc6c 100644
--- a/dbms/src/DataTypes/DataTypeNullable.h
+++ b/dbms/src/DataTypes/DataTypeNullable.h
@@ -45,8 +45,8 @@ public:
             DeserializeBinaryBulkSettings & settings,
             DeserializeBinaryBulkStatePtr & state) const override;
 
-    void serializeBinary(const Field & field, WriteBuffer & ostr) const override { nested_data_type->serializeBinary(field, ostr); }
-    void deserializeBinary(Field & field, ReadBuffer & istr) const override { nested_data_type->deserializeBinary(field, istr); }
+    void serializeBinary(const Field & field, WriteBuffer & ostr) const override;
+    void deserializeBinary(Field & field, ReadBuffer & istr) const override;
     void serializeBinary(const IColumn & column, size_t row_num, WriteBuffer & ostr) const override;
     void deserializeBinary(IColumn & column, ReadBuffer & istr) const override;
     void serializeTextEscaped(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings &) const override;
diff --git a/dbms/tests/queries/0_stateless/01016_null_part_minmax.reference b/dbms/tests/queries/0_stateless/01016_null_part_minmax.reference
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/dbms/tests/queries/0_stateless/01016_null_part_minmax.sql b/dbms/tests/queries/0_stateless/01016_null_part_minmax.sql
new file mode 100644
index 00000000000..3d471a33a33
--- /dev/null
+++ b/dbms/tests/queries/0_stateless/01016_null_part_minmax.sql
@@ -0,0 +1,5 @@
+-- this test checks that null values are correctly serialized inside minmax index (issue #7113)
+drop table if exists null_01016;
+create table if not exists null_01016 (x Nullable(String)) engine MergeTree order by ifNull(x, 'order-null') partition by ifNull(x, 'partition-null');
+insert into null_01016 values (null);
+drop table null_01016;