diff --git a/rules-tests/TypeDeclaration/Rector/Class_/MergeDateTimePropertyTypeDeclarationRector/Fixture/type_from_use.php.inc b/rules-tests/TypeDeclaration/Rector/Class_/MergeDateTimePropertyTypeDeclarationRector/Fixture/type_from_use.php.inc
new file mode 100644
index 00000000000..10f131b3de8
--- /dev/null
+++ b/rules-tests/TypeDeclaration/Rector/Class_/MergeDateTimePropertyTypeDeclarationRector/Fixture/type_from_use.php.inc
@@ -0,0 +1,30 @@
+<?php
+
+namespace Rector\Tests\TypeDeclaration\Rector\Class_\MergeDateTimePropertyTypeDeclarationRector\Fixture;
+
+use DateTimeInterface;
+use DateTime;
+
+final class TypeFromUse
+{
+    /**
+     * @var DateTimeInterface
+     */
+    private DateTime $dateTime;
+}
+
+?>
+-----
+<?php
+
+namespace Rector\Tests\TypeDeclaration\Rector\Class_\MergeDateTimePropertyTypeDeclarationRector\Fixture;
+
+use DateTimeInterface;
+use DateTime;
+
+final class TypeFromUse
+{
+    private \DateTimeInterface $dateTime;
+}
+
+?>
diff --git a/rules/TypeDeclaration/Rector/Class_/MergeDateTimePropertyTypeDeclarationRector.php b/rules/TypeDeclaration/Rector/Class_/MergeDateTimePropertyTypeDeclarationRector.php
index 98497205f83..8635014d3b0 100644
--- a/rules/TypeDeclaration/Rector/Class_/MergeDateTimePropertyTypeDeclarationRector.php
+++ b/rules/TypeDeclaration/Rector/Class_/MergeDateTimePropertyTypeDeclarationRector.php
@@ -4,6 +4,7 @@
 
 namespace Rector\TypeDeclaration\Rector\Class_;
 
+use PHPStan\Type\TypeWithClassName;
 use PhpParser\Node;
 use PhpParser\Node\Name\FullyQualified;
 use PhpParser\Node\Stmt\Class_;
@@ -13,7 +14,6 @@
 use Rector\Comments\NodeDocBlock\DocBlockUpdater;
 use Rector\Core\Rector\AbstractRector;
 use Rector\Core\ValueObject\PhpVersionFeature;
-use Rector\StaticTypeMapper\ValueObject\Type\FullyQualifiedObjectType;
 use Rector\VersionBonding\Contract\MinPhpVersionInterface;
 use Symplify\RuleDocGenerator\ValueObject\CodeSample\CodeSample;
 use Symplify\RuleDocGenerator\ValueObject\RuleDefinition;
@@ -92,7 +92,10 @@ public function refactor(Node $node): ?Node
             }
 
             $varType = $phpDocInfo->getVarType();
-            if ($varType instanceof FullyQualifiedObjectType && $varType->getClassName() === 'DateTimeInterface') {
+            $className = $varType instanceof TypeWithClassName
+                ? $this->nodeTypeResolver->getFullyQualifiedClassName($varType)
+                : null;
+            if ($className === 'DateTimeInterface') {
                 $phpDocInfo->removeByType(VarTagValueNode::class);
                 $this->docBlockUpdater->updateRefactoredNodeWithPhpDocInfo($property);