diff --git a/rules-tests/TypeDeclaration/Rector/Class_/MergeDateTimePropertyTypeDeclarationRector/Fixture/do_not_remove_doc_with_description.php.inc b/rules-tests/TypeDeclaration/Rector/Class_/MergeDateTimePropertyTypeDeclarationRector/Fixture/do_not_remove_doc_with_description.php.inc
new file mode 100644
index 00000000000..c8f0c095477
--- /dev/null
+++ b/rules-tests/TypeDeclaration/Rector/Class_/MergeDateTimePropertyTypeDeclarationRector/Fixture/do_not_remove_doc_with_description.php.inc
@@ -0,0 +1,27 @@
+<?php
+
+namespace Rector\Tests\TypeDeclaration\Rector\Class_\MergeDateTimePropertyTypeDeclarationRector\Fixture;
+
+final class DoNotRemoveDocWithDescription
+{
+    /**
+     * @var \DateTimeInterface some desc
+     */
+    private \DateTime $dateTime;
+}
+
+?>
+-----
+<?php
+
+namespace Rector\Tests\TypeDeclaration\Rector\Class_\MergeDateTimePropertyTypeDeclarationRector\Fixture;
+
+final class DoNotRemoveDocWithDescription
+{
+    /**
+     * @var \DateTimeInterface some desc
+     */
+    private \DateTimeInterface $dateTime;
+}
+
+?>
diff --git a/rules/TypeDeclaration/Rector/Class_/MergeDateTimePropertyTypeDeclarationRector.php b/rules/TypeDeclaration/Rector/Class_/MergeDateTimePropertyTypeDeclarationRector.php
index 9afd3551379..08d6768dfff 100644
--- a/rules/TypeDeclaration/Rector/Class_/MergeDateTimePropertyTypeDeclarationRector.php
+++ b/rules/TypeDeclaration/Rector/Class_/MergeDateTimePropertyTypeDeclarationRector.php
@@ -99,8 +99,11 @@ public function refactor(Node $node): ?Node
                 ? $this->nodeTypeResolver->getFullyQualifiedClassName($varType)
                 : null;
             if ($className === 'DateTimeInterface') {
-                $phpDocInfo->removeByType(VarTagValueNode::class);
-                $this->docBlockUpdater->updateRefactoredNodeWithPhpDocInfo($property);
+                $varTagvalueNode = $phpDocInfo->getVarTagValueNode();
+                if ($varTagvalueNode instanceof VarTagValueNode && $varTagvalueNode->description === '') {
+                    $phpDocInfo->removeByType(VarTagValueNode::class);
+                    $this->docBlockUpdater->updateRefactoredNodeWithPhpDocInfo($property);
+                }
 
                 $property->type = new FullyQualified('DateTimeInterface');
                 $hasChanged = true;