diff --git a/modules/comment/comment.controller.php b/modules/comment/comment.controller.php
index f57f067f6..3eb2baee8 100644
--- a/modules/comment/comment.controller.php
+++ b/modules/comment/comment.controller.php
@@ -2001,6 +2001,41 @@ class CommentController extends Comment
 		$this->setMessage('success_declared_cancel');
 	}
 
+	/**
+	 * Update the number of uploaded files in the comment
+	 *
+	 * @param int|array $comment_srl_list
+	 * @return void
+	 */
+	public function updateUploadedCount($comment_srl_list)
+	{
+		if (!is_array($comment_srl_list))
+		{
+			$comment_srl_list = array($comment_srl_list);
+		}
+
+		if (!count($comment_srl_list))
+		{
+			return;
+		}
+
+		$comment_srl_list = array_unique($comment_srl_list);
+
+		foreach($comment_srl_list as $comment_srl)
+		{
+			$comment_srl = (int)$comment_srl;
+			if ($comment_srl <= 0)
+			{
+				continue;
+			}
+
+			$args = new stdClass;
+			$args->comment_srl = $comment_srl;
+			$args->uploaded_count = FileModel::getFilesCount($comment_srl);
+			executeQuery('comment.updateUploadedCount', $args);
+		}
+	}
+
 	/**
 	 * Method to add a pop-up menu when clicking for displaying child comments
 	 * @param string $url
diff --git a/modules/comment/queries/updateUploadedCount.xml b/modules/comment/queries/updateUploadedCount.xml
new file mode 100644
index 000000000..9a9bfab15
--- /dev/null
+++ b/modules/comment/queries/updateUploadedCount.xml
@@ -0,0 +1,11 @@
+<query id="updateUploadedCount" action="update">
+	<tables>
+		<table name="comments" />
+	</tables>
+	<columns>
+		<column name="uploaded_count" var="uploaded_count" default="0" filter="number" />
+	</columns>
+	<conditions>
+		<condition operation="equal" column="comment_srl" var="comment_srl" filter="number" notnull="notnull" />
+	</conditions>
+</query>
diff --git a/modules/document/document.controller.php b/modules/document/document.controller.php
index 418857e29..4c281b0d4 100644
--- a/modules/document/document.controller.php
+++ b/modules/document/document.controller.php
@@ -3788,7 +3788,17 @@ Content;
 		}
 	}
 
+	/**
+	 * A typo of updateUploadedCount, maintained for backward compatibility.
+	 *
+	 * @deprecated
+	 */
 	public function updateUploaedCount($document_srl_list)
+	{
+		return $this->updateUploadedCount($document_srl_list);
+	}
+
+	public function updateUploadedCount($document_srl_list)
 	{
 		if(!is_array($document_srl_list))
 		{
@@ -3804,7 +3814,8 @@ Content;
 
 		foreach($document_srl_list as $document_srl)
 		{
-			if(!$document_srl = (int) $document_srl)
+			$document_srl = (int)$document_srl;
+			if ($document_srl <= 0)
 			{
 				continue;
 			}
@@ -3824,7 +3835,7 @@ Content;
 			return;
 		}
 
-		$this->updateUploaedCount($file->upload_target_srl);
+		$this->updateUploadedCount($file->upload_target_srl);
 	}
 
 	/**
diff --git a/modules/file/file.controller.php b/modules/file/file.controller.php
index c46e633c1..c9ae4e628 100644
--- a/modules/file/file.controller.php
+++ b/modules/file/file.controller.php
@@ -2002,6 +2002,8 @@ class FileController extends File
 		}
 
 		$this->copyFiles($obj->source->document_srl, $obj->copied->module_srl, $obj->copied->document_srl, $obj->copied->content);
+		$this->setFilesValid($obj->copied->document_srl, 'doc');
+		DocumentController::getInstance()->updateUploadedCount($obj->copied->document_srl);
 	}
 
 	function triggerAddCopyCommentByDocument(&$obj)
@@ -2012,6 +2014,8 @@ class FileController extends File
 		}
 
 		$this->copyFiles($obj->source->comment_srl, $obj->copied->module_srl, $obj->copied->comment_srl, $obj->copied->content);
+		$this->setFilesValid($obj->copied->comment_srl, 'com');
+		CommentController::getInstance()->updateUploadedCount($obj->copied->comment_srl);
 	}
 
 	function triggerCopyModule(&$obj)