diff --git a/.run/DBD-PHP-Entity.run.xml b/.run/DBD-PHP-Entity.run.xml
index f911ab7..798fb9a 100644
--- a/.run/DBD-PHP-Entity.run.xml
+++ b/.run/DBD-PHP-Entity.run.xml
@@ -1,5 +1,10 @@
 <component name="ProjectRunConfigurationManager">
   <configuration default="false" name="DBD-PHP-Entity" type="PHPUnitRunConfigurationType" factoryName="PHPUnit">
+    <CommandLine>
+      <PhpTestInterpreterSettings>
+        <option name="interpreterName" value="8.1" />
+      </PhpTestInterpreterSettings>
+    </CommandLine>
     <TestRunner configuration_file="$PROJECT_DIR$/phpunit.xml" directory="$PROJECT_DIR$/tests" use_alternative_configuration_file="true" />
     <method v="2" />
   </configuration>
diff --git a/composer.json b/composer.json
index 5b331e3..837b69b 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,7 @@
 {
   "name": "falseclock/dbd-php-entity",
   "type": "library",
+  "version": "3.0.0",
   "description": "DTO like library to fetch any data in an Object-Oriented manner (ORM)",
   "keywords": [
     "dbd",
@@ -23,7 +24,7 @@
     }
   ],
   "require": {
-    "php": "^7.1|^8.0",
+    "php": "^8.0",
     "ext-json": "*",
     "myclabs/php-enum": "^1.7.7"
   },
diff --git a/src/DBD/Entity/Entity.php b/src/DBD/Entity/Entity.php
index 7b402da..788d74d 100644
--- a/src/DBD/Entity/Entity.php
+++ b/src/DBD/Entity/Entity.php
@@ -212,6 +212,7 @@ private function setModelData(Mapper $map, int $maxLevels, int $currentLevel): v
      * @param Mapper $mapper
      *
      * @throws EntityException
+     * @throws \ReflectionException
      */
     private function setBaseColumns(Mapper $mapper)
     {
@@ -284,10 +285,25 @@ private function setBaseColumns(Mapper $mapper)
                      * Entity public variables should not have default values.
                      * But sometimes we need to have default value for column in case of $rowData has null value
                      * In this case we should not override default value if $columnValue is null
+                     * Иными словами нельзя переписывать дефолтное значение, если из базы пришло null
+                     * но, если нет дефолтного значения, то мы должны его проинизиализировать null значением
                      */
-                    if (!isset($this->$property) and isset($columnValue)) {
-                        $this->$property = &$columnValue;
-                    }
+                    $reflection = new ReflectionObject($this);
+                    $reflectionProperty = $reflection->getProperty($property);
+
+                    // Если мы еще не инциализировали переменную и у нас есть значение для этой переменной
+                    //if (!isset($this->$property)) {
+
+                        // Если у нас есть значение, то ставим его
+                        if (isset($columnValue)) {
+                            $this->$property = &$columnValue;
+                        } else {
+                            // У нас нет прицепленного значения
+                            if (!$reflectionProperty->hasDefaultValue()) {
+                                $this->$property = $columnValue; // this is NULL value
+                            }
+                        }
+                    //}
                 }
             }
         }
diff --git a/tests/DBD/Entity/Tests/Entities/EntityWithDefaults.php b/tests/DBD/Entity/Tests/Entities/EntityWithDefaults.php
new file mode 100644
index 0000000..2147ac6
--- /dev/null
+++ b/tests/DBD/Entity/Tests/Entities/EntityWithDefaults.php
@@ -0,0 +1,35 @@
+<?php
+declare(strict_types=1);
+
+namespace DBD\Entity\Tests\Entities;
+
+use DBD\Entity\Column;
+use DBD\Entity\Interfaces\SyntheticEntity;
+use DBD\Entity\Mapper;
+use DBD\Entity\Primitives\StringPrimitives;
+use DBD\Entity\View;
+
+class EntityWithDefaults extends View implements SyntheticEntity
+{
+    public const PREFILL = "shouldn't be changed";
+
+    public ?string $prefiled = self::PREFILL;
+
+    public ?string $unfiled;
+}
+
+
+class EntityWithDefaultsMap extends Mapper
+{
+    public $prefiled = [
+        Column::NAME => "prefilled",
+        Column::PRIMITIVE_TYPE => StringPrimitives::String,
+        Column::NULLABLE => true
+    ];
+
+    public $unfiled = [
+        Column::NAME => "unfilled",
+        Column::PRIMITIVE_TYPE => StringPrimitives::String,
+        Column::NULLABLE => true
+    ];
+}
diff --git a/tests/DBD/Entity/Tests/EntityTest.php b/tests/DBD/Entity/Tests/EntityTest.php
index 51ee65d..bc14d64 100644
--- a/tests/DBD/Entity/Tests/EntityTest.php
+++ b/tests/DBD/Entity/Tests/EntityTest.php
@@ -33,6 +33,7 @@
 use DBD\Entity\Tests\Entities\DeclarationChain\C;
 use DBD\Entity\Tests\Entities\DeclarationChain\D;
 use DBD\Entity\Tests\Entities\DeclarationChain\E;
+use DBD\Entity\Tests\Entities\EntityWithDefaults;
 use DBD\Entity\Tests\Entities\JsonTypeColumn;
 use DBD\Entity\Tests\Entities\JsonTypeColumnMap;
 use DBD\Entity\Tests\Entities\PersonBase;
@@ -65,6 +66,26 @@ public function testRaw()
         self::assertSame($personData, $person->raw());
     }
 
+    public function testPrefilledWithNullValues() {
+        $data = [
+            'prefilled' => null,
+            'unfilled' => null,
+        ];
+
+        $entity = new EntityWithDefaults($data);
+        self::assertSame(EntityWithDefaults::PREFILL, $entity->prefiled);
+        self::assertSame(null, $entity->unfiled);
+
+        $data = [
+            'prefilled' => "123",
+            'unfilled' => "123",
+        ];
+
+        $entity = new EntityWithDefaults($data);
+        self::assertSame("123", $entity->prefiled);
+        self::assertSame("123", $entity->unfiled);
+    }
+
     /**
      * @throws EntityException
      */