diff --git a/lib/EbookTag.php b/lib/EbookTag.php
index f059354b..fd334bfa 100644
--- a/lib/EbookTag.php
+++ b/lib/EbookTag.php
@@ -59,7 +59,7 @@ class EbookTag extends Tag{
 				SELECT *
 				from Tags
 				where Name = ?
-			', [$name], 'EbookTag');
+			', [$name], EbookTag::class);
 
 		if(isset($result[0])){
 			return $result[0];
diff --git a/lib/LocSubject.php b/lib/LocSubject.php
index 49d03ab9..7db6f231 100644
--- a/lib/LocSubject.php
+++ b/lib/LocSubject.php
@@ -39,7 +39,7 @@ class LocSubject{
 				SELECT *
 				from LocSubjects
 				where Name = ?
-			', [$name], 'LocSubject');
+			', [$name], LocSubject::class);
 
 		if(isset($result[0])){
 			return $result[0];