diff --git a/application/Espo/ORM/QueryComposer/PostgresqlQueryComposer.php b/application/Espo/ORM/QueryComposer/PostgresqlQueryComposer.php
index a59f7bd952..b0e00e5384 100644
--- a/application/Espo/ORM/QueryComposer/PostgresqlQueryComposer.php
+++ b/application/Espo/ORM/QueryComposer/PostgresqlQueryComposer.php
@@ -174,7 +174,7 @@ class PostgresqlQueryComposer extends BaseQueryComposer
         if ($function === 'UNIX_TIMESTAMP') {
             $arg = $argumentPartList[0] ?? 'NOW()';
 
-            return "FLOOR(EXTRACT(EPOCH FROM $arg))";
+            return "FLOOR(EXTRACT(EPOCH FROM $arg::timestamp))";
         }
 
         if ($function === 'BINARY') {