diff --git a/releasenotes.txt b/releasenotes.txt
index bee48f451cc..292bd4b79b6 100644
--- a/releasenotes.txt
+++ b/releasenotes.txt
@@ -192,6 +192,14 @@ Release notes - NHibernate - Version 5.1.0
 As part of releasing 5.1.0, a missing 5.0.0 possible breaking change has been added about inequality semantic in LINQ
 queries. See 5.0.0 possible breaking changes.
 
+Build 5.0.5
+=============================
+
+Release notes - NHibernate - Version 5.0.5
+
+** Bug
+    * #1665 Have IFutureEnumerable.GetEnumerable executing immediatly the query
+
 Build 5.0.4
 =============================
 
diff --git a/src/NHibernate.Test/Async/Futures/FutureQueryFixture.cs b/src/NHibernate.Test/Async/Futures/FutureQueryFixture.cs
index 6a277639fdc..6c330907bab 100644
--- a/src/NHibernate.Test/Async/Futures/FutureQueryFixture.cs
+++ b/src/NHibernate.Test/Async/Futures/FutureQueryFixture.cs
@@ -152,5 +152,25 @@ public async Task CanExecuteMultipleQueryWithSameParameterNameAsync()
 				}
 			}
 		}
+
+		[Test]
+		public async Task FutureExecutedOnGetEnumerableAsync()
+		{
+			Sfi.Statistics.IsStatisticsEnabled = true;
+			try
+			{
+				using (var s = Sfi.OpenSession())
+				{
+					var persons = s.CreateQuery("from Person").Future<Person>();
+					Sfi.Statistics.Clear();
+					await (persons.GetEnumerableAsync());
+					Assert.That(Sfi.Statistics.PrepareStatementCount, Is.EqualTo(1));
+				}
+			}
+			finally
+			{
+				Sfi.Statistics.IsStatisticsEnabled = false;
+			}
+		}
 	}
 }
diff --git a/src/NHibernate.Test/Futures/FutureQueryFixture.cs b/src/NHibernate.Test/Futures/FutureQueryFixture.cs
index fe7d35751e6..ff1a5c5731e 100644
--- a/src/NHibernate.Test/Futures/FutureQueryFixture.cs
+++ b/src/NHibernate.Test/Futures/FutureQueryFixture.cs
@@ -141,5 +141,25 @@ public void CanExecuteMultipleQueryWithSameParameterName()
 				}
 			}
 		}
+
+		[Test]
+		public void FutureExecutedOnGetEnumerable()
+		{
+			Sfi.Statistics.IsStatisticsEnabled = true;
+			try
+			{
+				using (var s = Sfi.OpenSession())
+				{
+					var persons = s.CreateQuery("from Person").Future<Person>();
+					Sfi.Statistics.Clear();
+					persons.GetEnumerable();
+					Assert.That(Sfi.Statistics.PrepareStatementCount, Is.EqualTo(1));
+				}
+			}
+			finally
+			{
+				Sfi.Statistics.IsStatisticsEnabled = false;
+			}
+		}
 	}
 }
diff --git a/src/NHibernate/Impl/DelayedEnumerator.cs b/src/NHibernate/Impl/DelayedEnumerator.cs
index 158e78d7f75..5365a7db1f0 100644
--- a/src/NHibernate/Impl/DelayedEnumerator.cs
+++ b/src/NHibernate/Impl/DelayedEnumerator.cs
@@ -25,11 +25,7 @@ public DelayedEnumerator(GetResult result, GetResultAsync resultAsync)
 
 		public IEnumerable<T> GetEnumerable()
 		{
-			var value = _result();
-			foreach (T item in value)
-			{
-				yield return item;
-			}
+			return _result();
 		}
 
 		// Remove in 6.0