diff --git a/LICENSE b/LICENSE
new file mode 100644
index 000000000..65f4b0c70
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2006-2018, SilverStripe Limited - www.silverstripe.com
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+* Neither the name of the copyright holder nor the names of its
+  contributors may be used to endorse or promote products derived from
+  this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/README.md b/README.md
index dc579b3b9..8f8c6b34a 100644
--- a/README.md
+++ b/README.md
@@ -34,26 +34,6 @@ If you would like to make changes to the SilverStripe core codebase, we have an
  * [Bugtracker: Installer](https://github.com/silverstripe/silverstripe-installer/issues)
  * [Forums](http://silverstripe.org/forums)
  * [Developer Mailinglist](https://groups.google.com/forum/#!forum/silverstripe-dev)
-
-## License ##
-
-	Copyright (c) 2006-2014, SilverStripe Limited - www.silverstripe.com
-	All rights reserved.
-
-	Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
-
-	    * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
-	    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the 
-	      documentation and/or other materials provided with the distribution.
-	    * Neither the name of SilverStripe nor the names of its contributors may be used to endorse or promote products derived from this software 
-	      without specific prior written permission.
-
-	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
-	IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
-	LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 
-	GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 
-	STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 
-	OF SUCH DAMAGE.
 	
 ## Attribution ##
 
diff --git a/control/injector/Injector.php b/control/injector/Injector.php
index 1c247b35e..96c69854b 100644
--- a/control/injector/Injector.php
+++ b/control/injector/Injector.php
@@ -551,6 +551,11 @@ class Injector {
 			$constructorParams = $spec['constructor'];
 		}
 
+		// If we're dealing with a DataObject, pass through Singleton flag as second argument
+		if ($type != 'prototype' && empty($constructorParams) && is_subclass_of($class, 'DataObject')) {
+			$constructorParams = array(null, true);
+		}
+
 		$factory = isset($spec['factory']) ? $this->get($spec['factory']) : $this->getObjectCreator();
 		$object = $factory->create($class, $constructorParams);
 
diff --git a/tests/model/DataObjectTest.php b/tests/model/DataObjectTest.php
index 8d7cdf474..8855693eb 100644
--- a/tests/model/DataObjectTest.php
+++ b/tests/model/DataObjectTest.php
@@ -33,6 +33,51 @@ class DataObjectTest extends SapphireTest {
 		'ManyManyListTest_Category',
 	);
 
+	/**
+	 * @dataProvider provideSingletons
+	 */
+	public function testSingleton($inst, $defaultValue, $altDefaultValue)
+	{
+		$inst = $inst();
+		// Test that populateDefaults() isn't called on singletons
+		// which can lead to SQL errors during build, and endless loops
+		if ($defaultValue) {
+			$this->assertEquals($defaultValue, $inst->MyFieldWithDefault);
+		} else {
+			$this->assertEmpty($inst->MyFieldWithDefault);
+		}
+
+		if ($altDefaultValue) {
+			$this->assertEquals($altDefaultValue, $inst->MyFieldWithAltDefault);
+		} else {
+			$this->assertEmpty($inst->MyFieldWithAltDefault);
+		}
+	}
+
+	public function provideSingletons()
+	{
+		// because PHPUnit evalutes test providers *before* setUp methods
+		// any extensions added in the setUp methods won't be available
+		// we must return closures to generate the arguments at run time
+		return array(
+			array(function () {
+				return DataObjectTest_Fixture::create();
+			}, 'Default Value', 'Default Value'),
+			array(function () {
+				return new DataObjectTest_Fixture();
+			}, 'Default Value', 'Default Value'),
+			array(function () {
+				return singleton('DataObjectTest_Fixture');
+			}, null, null),
+			array(function () {
+				return DataObjectTest_Fixture::singleton();
+			}, null, null),
+			array(function () {
+				return new DataObjectTest_Fixture(null, true);
+			}, null, null),
+		);
+	}
+
 	public function testDb() {
 		$obj = new DataObjectTest_TeamComment();
 		$dbFields = $obj->db();