diff --git a/alint.5.scd b/alint.5.scd
index 2aede2a461f69ad52858d0792e8963995fdde137..6cf76d3a79b68988c0db4df25bd4009d318097dc 100644
--- a/alint.5.scd
+++ b/alint.5.scd
@@ -443,3 +443,10 @@ The GNUTLS-SA identifier is not formatted correctly, please check the output
 string for the reason why.
 
 Severity: Minor, Certainty: Certain
+
+## unknown-security-identifier [AL52]
+
+An unknown identifier was passed, if it is a legitimate identifier then please
+contact the authors to add support for it.
+
+Severity: Minor, Certainty: Certain