diff --git a/constants/bad_data.php b/constants/bad_data.php
index 0a0997f2f0..a9f0a4a08a 100644
--- a/constants/bad_data.php
+++ b/constants/bad_data.php
@@ -982,7 +982,7 @@
 		  '10.7759/cureus.', '10.1099/acmi', '10.1099/mic', '10.1099/00221287', '10.1099/mgen', '10.1045/',
 		  '10.1096/',);
 
-const NULL_DOI_LIST =
+const NULL_DOI_LIST = /** Double check before removing - for example, 10.2225/vol9-issue3-fulltext-15 is liar and is dead **/
 array(
 '10.1007/BF00162691',
 '10.1007/BF00202951',
@@ -1030,7 +1030,6 @@
 '10.24109/2176-6681.rbep.81i198.946',
 '10.24115/S2446-6220202173A1397p.245-252',
 '10.24321/0019.5138.201906',
-'10.24832/papua.v6i1.45',
 '10.29173/bluejay1721',
 '10.31096/wua033-pls90b070',
 '10.31318/2522-4190.2018.121.133109',