diff --git a/src/NHibernate.Test/NHSpecificTest/NH3666/Entity.cs b/src/NHibernate.Test/NHSpecificTest/NH3666/Entity.cs
new file mode 100644
index 00000000000..2634bb82806
--- /dev/null
+++ b/src/NHibernate.Test/NHSpecificTest/NH3666/Entity.cs
@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace NHibernate.Test.NHSpecificTest.NH3666
+{
+	public class Entity
+	{
+		public virtual int Id { get; set; }
+		public virtual string Property { get; set; }
+	}
+}
diff --git a/src/NHibernate.Test/NHSpecificTest/NH3666/Fixture.cs b/src/NHibernate.Test/NHSpecificTest/NH3666/Fixture.cs
new file mode 100644
index 00000000000..07cf3ce44b3
--- /dev/null
+++ b/src/NHibernate.Test/NHSpecificTest/NH3666/Fixture.cs
@@ -0,0 +1,75 @@
+using NUnit.Framework;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace NHibernate.Test.NHSpecificTest.NH3666
+{
+	[TestFixture]
+	public class Fixture : BugTestCase
+	{
+		protected override void OnSetUp()
+		{
+			using (var session = this.OpenSession())
+			using (var transaction = session.BeginTransaction())
+			{
+				var entity1 = new Entity { Id = 1, Property = "Test1" };
+				var entity2 = new Entity { Id = 2, Property = "Test2" };
+				var entity3 = new Entity { Id = 3, Property = "Test3" };
+
+				session.Save(entity1);
+				session.Save(entity2);
+				session.Save(entity3);
+
+				transaction.Commit();
+			}
+		}
+
+		protected override void OnTearDown()
+		{
+			using (var session = this.OpenSession())
+			using (var transaction = session.BeginTransaction())
+			{
+				session.Delete("from Entity");
+				transaction.Commit();
+			}
+		}
+
+		[Test]
+		public void CacheableDoesNotThrowExceptionWithNativeSQLQuery()
+		{
+			using (var session = this.OpenSession())
+			using (var transaction = session.BeginTransaction())
+			{
+				var result = session.CreateSQLQuery("SELECT * FROM Entity WHERE Property = 'Test2'")
+				                    .AddEntity(typeof(Entity))
+				                    .SetCacheable(true)
+				                    .List<Entity>();
+
+				CollectionAssert.IsNotEmpty(result);
+
+				Assert.AreEqual(1, result.Count);
+				Assert.AreEqual(2, result[0].Id);
+			}
+		}
+
+		[Test]
+		public void CacheableDoesNotThrowExceptionWithNamedQuery()
+		{
+			using (var session = this.OpenSession())
+			using (var transaction = session.BeginTransaction())
+			{
+				var result = session.GetNamedQuery("QueryName")
+				                    .SetCacheable(true)
+				                    .SetString("prop", "Test2")
+				                    .List<Entity>();
+
+				CollectionAssert.IsNotEmpty(result);
+
+				Assert.AreEqual(1, result.Count);
+				Assert.AreEqual(2, result[0].Id);
+			}
+		}
+	}
+}
diff --git a/src/NHibernate.Test/NHSpecificTest/NH3666/Mappings.hbm.xml b/src/NHibernate.Test/NHSpecificTest/NH3666/Mappings.hbm.xml
new file mode 100644
index 00000000000..52f6dc62aae
--- /dev/null
+++ b/src/NHibernate.Test/NHSpecificTest/NH3666/Mappings.hbm.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
+                   assembly="NHibernate.Test"
+                   namespace="NHibernate.Test.NHSpecificTest.NH3666">
+
+    <class name="Entity" table="Entity">
+        <id name="Id" access="property" column="Id" type="Int32" unsaved-value="0">
+            <generator class="assigned" />
+        </id>
+        <property name="Property" type="String" />
+    </class>
+
+    <sql-query name="QueryName">
+        <return class="Entity" />
+        SELECT * FROM Entity WHERE Property = :prop
+    </sql-query>
+
+</hibernate-mapping>
diff --git a/src/NHibernate.Test/NHibernate.Test.csproj b/src/NHibernate.Test/NHibernate.Test.csproj
index 9b90e13aebc..e5aa8a0e3c6 100644
--- a/src/NHibernate.Test/NHibernate.Test.csproj
+++ b/src/NHibernate.Test/NHibernate.Test.csproj
@@ -732,6 +732,8 @@
     <Compile Include="NHSpecificTest\NH3570\BiFixture.cs" />
     <Compile Include="NHSpecificTest\NH3570\Model.cs" />
     <Compile Include="NHSpecificTest\NH3570\UniFixture.cs" />
+    <Compile Include="NHSpecificTest\NH3666\Entity.cs" />
+    <Compile Include="NHSpecificTest\NH3666\Fixture.cs" />
     <Compile Include="NHSpecificTest\NH3731\Entity.cs" />
     <Compile Include="NHSpecificTest\NH3731\FixtureByCode.cs" />
     <Compile Include="NHSpecificTest\NH2053\Cat.cs" />
@@ -3128,6 +3130,9 @@
     <EmbeddedResource Include="NHSpecificTest\NH1291AnonExample\Mappings.hbm.xml" />
   </ItemGroup>
   <ItemGroup>
+    <EmbeddedResource Include="NHSpecificTest\NH3666\Mappings.hbm.xml">
+      <SubType>Designer</SubType>
+    </EmbeddedResource>
     <EmbeddedResource Include="VersionTest\Db\MsSQL\ProductWithVersionAndLazyProperty.hbm.xml" />
     <EmbeddedResource Include="NHSpecificTest\NH3754\Mappings.hbm.xml" />
     <EmbeddedResource Include="LazyComponentTest\Person.hbm.xml" />
diff --git a/src/NHibernate/Loader/Custom/CustomLoader.cs b/src/NHibernate/Loader/Custom/CustomLoader.cs
index fd94d46b893..9ba951847c2 100644
--- a/src/NHibernate/Loader/Custom/CustomLoader.cs
+++ b/src/NHibernate/Loader/Custom/CustomLoader.cs
@@ -38,6 +38,8 @@ public class CustomLoader : Loader
 		private readonly LockMode[] lockModes;
 		private readonly ResultRowProcessor rowProcessor;
 
+		private readonly bool[] includeInResultRow;
+
 		private IType[] resultTypes;
 		private string[] transformerAliases;
 
@@ -61,6 +63,8 @@ public CustomLoader(ICustomQuery customQuery, ISessionFactoryImplementor factory
 			List<IType> resulttypes = new List<IType>();
 			List<string> specifiedAliases = new List<string>();
 
+			List<bool> includeInResultRowList = new List<bool>();
+
 			int returnableCounter = 0;
 			bool hasScalars = false;
 
@@ -72,6 +76,7 @@ public CustomLoader(ICustomQuery customQuery, ISessionFactoryImplementor factory
 					resulttypes.Add(scalarRtn.Type);
 					specifiedAliases.Add(scalarRtn.ColumnAlias);
 					resultColumnProcessors.Add(new ScalarResultColumnProcessor(scalarRtn.ColumnAlias, scalarRtn.Type));
+					includeInResultRowList.Add(true);
 					hasScalars = true;
 				}
 				else if (rtn is RootReturn)
@@ -87,6 +92,7 @@ public CustomLoader(ICustomQuery customQuery, ISessionFactoryImplementor factory
 					specifiedAliases.Add(rootRtn.Alias);
 					entityaliases.Add(rootRtn.EntityAliases);
 					querySpaces.UnionWith(persister.QuerySpaces);
+					includeInResultRowList.Add(true);
 				}
 				else if (rtn is CollectionReturn)
 				{
@@ -111,6 +117,7 @@ public CustomLoader(ICustomQuery customQuery, ISessionFactoryImplementor factory
 						entityaliases.Add(collRtn.ElementEntityAliases);
 						querySpaces.UnionWith(elementPersister.QuerySpaces);
 					}
+					includeInResultRowList.Add(true);
 				}
 				else if (rtn is EntityFetchReturn)
 				{
@@ -128,6 +135,7 @@ public CustomLoader(ICustomQuery customQuery, ISessionFactoryImplementor factory
 					specifiedAliases.Add(fetchRtn.Alias);
 					entityaliases.Add(fetchRtn.EntityAliases);
 					querySpaces.UnionWith(persister.QuerySpaces);
+					includeInResultRowList.Add(false);
 				}
 				else if (rtn is CollectionFetchReturn)
 				{
@@ -153,6 +161,7 @@ public CustomLoader(ICustomQuery customQuery, ISessionFactoryImplementor factory
 						entityaliases.Add(fetchRtn.ElementEntityAliases);
 						querySpaces.UnionWith(elementPersister.QuerySpaces);
 					}
+					includeInResultRowList.Add(false);
 				}
 				else
 				{
@@ -170,6 +179,7 @@ public CustomLoader(ICustomQuery customQuery, ISessionFactoryImplementor factory
 			resultTypes = resulttypes.ToArray();
 			transformerAliases = specifiedAliases.ToArray();
 			rowProcessor = new ResultRowProcessor(hasScalars, resultColumnProcessors.ToArray());
+			includeInResultRow = includeInResultRowList.ToArray();
 		}
 
 		public ISet<string> QuerySpaces
@@ -289,6 +299,11 @@ protected override IResultTransformer ResolveResultTransformer(IResultTransforme
 			return HolderInstantiator.ResolveResultTransformer(null, resultTransformer);
 		}
 
+		protected override bool[] IncludeInResultRow
+		{
+			get { return includeInResultRow; }
+		}
+
 		public override IList GetResultList(IList results, IResultTransformer resultTransformer)
 		{
 			// meant to handle dynamic instantiation queries...(Copy from QueryLoader)