diff --git a/src/Api/Jobs/AddPostJob.php b/src/Api/Jobs/AddPostJob.php
index 23634ca1..e7952a79 100644
--- a/src/Api/Jobs/AddPostJob.php
+++ b/src/Api/Jobs/AddPostJob.php
@@ -38,7 +38,7 @@ class AddPostJob extends AbstractJob
 			'post' => TextHelper::reprPost($post),
 			'tags' => TextHelper::reprTags($post->getTags()),
 			'safety' => $post->getSafety()->toString(),
-			'source' => $post->source]);
+			'source' => $post->getSource()]);
 
 		Logger::flush();
 
diff --git a/src/Api/Jobs/EditPostSourceJob.php b/src/Api/Jobs/EditPostSourceJob.php
index a91bee85..d9133b4c 100644
--- a/src/Api/Jobs/EditPostSourceJob.php
+++ b/src/Api/Jobs/EditPostSourceJob.php
@@ -13,7 +13,7 @@ class EditPostSourceJob extends AbstractPostJob
 		$post = $this->post;
 		$newSource = $this->getArgument(self::SOURCE);
 
-		$oldSource = $post->source;
+		$oldSource = $post->getSource();
 		$post->setSource($newSource);
 
 		if ($this->getContext() == self::CONTEXT_NORMAL)
@@ -24,7 +24,7 @@ class EditPostSourceJob extends AbstractPostJob
 			Logger::log('{user} changed source of {post} to {source}', [
 				'user' => TextHelper::reprUser(Auth::getCurrentUser()),
 				'post' => TextHelper::reprPost($post),
-				'source' => $post->source]);
+				'source' => $post->getSource()]);
 		}
 
 		return $post;
diff --git a/src/Models/Entities/PostEntity.php b/src/Models/Entities/PostEntity.php
index 0cc0403c..9807102c 100644
--- a/src/Models/Entities/PostEntity.php
+++ b/src/Models/Entities/PostEntity.php
@@ -16,16 +16,23 @@ class PostEntity extends AbstractEntity implements IValidatable
 	public $imageWidth;
 	public $imageHeight;
 	public $uploaderId;
-	public $source;
+	protected $source;
 	public $commentCount = 0;
 	public $favCount = 0;
 	public $score = 0;
 
 	public function validate()
 	{
-		//todo
 		if (empty($this->getType()))
 			throw new SimpleException('No post type detected');
+
+		$this->getType()->validate();
+
+		$this->getSafety()->validate();
+
+		$maxSourceLength = getConfig()->posts->maxSourceLength;
+		if (strlen($this->getSource()) > $maxSourceLength)
+			throw new SimpleException('Source must have at most %d characters', $maxSourceLength);
 	}
 
 	public function getUploader()
@@ -197,7 +204,6 @@ class PostEntity extends AbstractEntity implements IValidatable
 
 	public function setType(PostType $type)
 	{
-		$type->validate();
 		$this->type = $type;
 	}
 
@@ -208,13 +214,17 @@ class PostEntity extends AbstractEntity implements IValidatable
 
 	public function setSafety(PostSafety $safety)
 	{
-		$safety->validate();
 		$this->safety = $safety;
 	}
 
+	public function getSource()
+	{
+		return $this->source;
+	}
+
 	public function setSource($source)
 	{
-		$this->source = PostModel::validateSource($source);
+		$this->source = trim($source);
 	}
 
 	public function getThumbCustomPath($width = null, $height = null)
@@ -390,14 +400,19 @@ class PostEntity extends AbstractEntity implements IValidatable
 	public function getEditToken()
 	{
 		$x = [];
+
 		foreach ($this->getTags() as $tag)
 			$x []= TextHelper::reprTag($tag->getName());
+
 		foreach ($this->getRelations() as $relatedPost)
 			$x []= TextHelper::reprPost($relatedPost);
+
 		$x []= $this->getSafety()->toInteger();
-		$x []= $this->source;
+		$x []= $this->getSource();
 		$x []= $this->fileHash;
+
 		natcasesort($x);
+
 		$x = join(' ', $x);
 		return md5($x);
 	}
diff --git a/src/Models/PostModel.php b/src/Models/PostModel.php
index 42ddbfb9..57584610 100644
--- a/src/Models/PostModel.php
+++ b/src/Models/PostModel.php
@@ -57,7 +57,7 @@ class PostModel extends AbstractCrudModel
 				'image_width' => $post->imageWidth,
 				'image_height' => $post->imageHeight,
 				'uploader_id' => $post->uploaderId,
-				'source' => $post->source,
+				'source' => $post->getSource(),
 				];
 
 			$stmt = new Sql\UpdateStatement();
@@ -273,17 +273,6 @@ class PostModel extends AbstractCrudModel
 
 
 
-	public static function validateSource($source)
-	{
-		$source = trim($source);
-
-		$maxLength = getConfig()->posts->maxSourceLength;
-		if (strlen($source) > $maxLength)
-			throw new SimpleException('Source must have at most %d characters', $maxLength);
-
-		return $source;
-	}
-
 	public static function validateThumbSize($width, $height)
 	{
 		$width = $width === null ? getConfig()->browsing->thumbWidth : $width;
diff --git a/src/Views/post-edit.phtml b/src/Views/post-edit.phtml
index 6bbab574..f23753ee 100644
--- a/src/Views/post-edit.phtml
+++ b/src/Views/post-edit.phtml
@@ -62,7 +62,7 @@
 				<input type="text"
 					name="source"
 					id="source"
-					value="<?= htmlspecialchars($this->context->transport->post->source) ?>"/>
+					value="<?= htmlspecialchars($this->context->transport->post->getSource()) ?>"/>
 			</div>
 		</div>
 	<?php endif ?>
diff --git a/src/Views/post-view.phtml b/src/Views/post-view.phtml
index eadc2139..c2654710 100644
--- a/src/Views/post-view.phtml
+++ b/src/Views/post-view.phtml
@@ -125,8 +125,8 @@ $canEditAnything = count(array_filter($editPostPrivileges)) > 0;
 		<div class="key-value source">
 			<span class="key">Source:</span>
 			<span class="value"
-				title="<?= $val = htmlspecialchars($this->context->transport->post->source ?: 'unknown') ?>">
-				<?php if (preg_match('/^((https?|ftp):|)\/\//', $this->context->transport->post->source)): ?>
+				title="<?= $val = htmlspecialchars($this->context->transport->post->getSource() ?: 'unknown') ?>">
+				<?php if (preg_match('/^((https?|ftp):|)\/\//', $this->context->transport->post->getSource())): ?>
 					<a href="<?= $val ?>"><?= $val ?></a>
 				<?php else: ?>
 					<?= $val ?>
diff --git a/tests/JobTests/EditPostSourceJobTest.php b/tests/JobTests/EditPostSourceJobTest.php
index 492854b9..38b1deb8 100644
--- a/tests/JobTests/EditPostSourceJobTest.php
+++ b/tests/JobTests/EditPostSourceJobTest.php
@@ -10,7 +10,7 @@ class EditPostSourceJobTest extends AbstractTest
 			return $this->runApi('a');
 		});
 
-		$this->assert->areEqual('a', $post->source);
+		$this->assert->areEqual('a', $post->getSource());
 		$this->assert->doesNotThrow(function() use ($post)
 		{
 			PostModel::findById($post->getId());