diff --git a/ChangeLog/7.1.4_dev.txt b/ChangeLog/7.1.4_dev.txt
index 754f28c4ee..2c98bef46b 100644
--- a/ChangeLog/7.1.4_dev.txt
+++ b/ChangeLog/7.1.4_dev.txt
@@ -1,2 +1,3 @@
 [main] Addressed IndexOutOfRangeException on translation of certain queries with aggregates
-[main] Notification to BuildLog when a hierarchy changes KeyGeneratorKind value to None
\ No newline at end of file
+[main] Notification to BuildLog when a hierarchy changes KeyGeneratorKind value to None
+[postgresql] Added explicit nulls setting for both column order directions to improve OrderBy/OrderByDescending performance
\ No newline at end of file
diff --git a/Orm/Xtensive.Orm.PostgreSql/Sql.Drivers.PostgreSql/v9_0/Translator.cs b/Orm/Xtensive.Orm.PostgreSql/Sql.Drivers.PostgreSql/v9_0/Translator.cs
index 22233fd625..cf3954edd8 100644
--- a/Orm/Xtensive.Orm.PostgreSql/Sql.Drivers.PostgreSql/v9_0/Translator.cs
+++ b/Orm/Xtensive.Orm.PostgreSql/Sql.Drivers.PostgreSql/v9_0/Translator.cs
@@ -30,6 +30,9 @@ public override void Translate(SqlCompilerContext context, object literalValue)
       }
     }
 
+    public override void TranslateSortOrder(IOutput output, bool ascending) =>
+      output.Append(ascending ? "ASC NULLS FIRST" : "DESC NULLS LAST");
+
     // Constructors
 
     public Translator(SqlDriver driver)