diff --git a/lib/ConnectionManager.php b/lib/ConnectionManager.php
index fb16d167f..727c33dac 100644
--- a/lib/ConnectionManager.php
+++ b/lib/ConnectionManager.php
@@ -39,10 +39,15 @@ public static function get_connection($name=null)
 	 * Drops the connection from the connection manager. Does not actually close it since there
 	 * is no close method in PDO.
 	 *
+	 * If $name is null then the default connection will be returned.
+	 *
 	 * @param string $name Name of the connection to forget about
 	 */
 	public static function drop_connection($name=null)
 	{
+		$config = Config::instance();
+		$name = $name ? $name : $config->get_default_connection();
+
 		if (isset(self::$connections[$name]))
 			unset(self::$connections[$name]);
 	}
diff --git a/test/ConnectionManagerTest.php b/test/ConnectionManagerTest.php
index ca29b0452..6e1e02580 100644
--- a/test/ConnectionManagerTest.php
+++ b/test/ConnectionManagerTest.php
@@ -10,7 +10,7 @@ public function test_get_connection_with_null_connection()
 		$this->assert_not_null(ConnectionManager::get_connection(null));
 		$this->assert_not_null(ConnectionManager::get_connection());
 	}
-    
+
 	public function test_get_connection()
 	{
 		$this->assert_not_null(ConnectionManager::get_connection('mysql'));
@@ -18,22 +18,40 @@ public function test_get_connection()
 
 	public function test_get_connection_uses_existing_object()
 	{
-		$a = ConnectionManager::get_connection('mysql');
-		$a->harro = 'harro there';
+		$connection = ConnectionManager::get_connection('mysql');
+		$this->assert_same($connection, ConnectionManager::get_connection('mysql'));
+	}
+
+	public function test_get_connection_with_default()
+	{
+		$default = ActiveRecord\Config::instance()->get_default_connection('mysql');
+		$connection = ConnectionManager::get_connection();
+		$this->assert_same(ConnectionManager::get_connection($default), $connection);
+	}
+
+	public function test_gh_91_get_connection_with_null_connection_is_always_default()
+	{
+		$conn_one = ConnectionManager::get_connection('mysql');
+		$conn_two = ConnectionManager::get_connection();
+		$conn_three = ConnectionManager::get_connection('mysql');
+		$conn_four = ConnectionManager::get_connection();
+
+		$this->assert_same($conn_one, $conn_three);
+		$this->assert_same($conn_two, $conn_three);
+		$this->assert_same($conn_four, $conn_three);
+	}
 
-		$this->assert_same($a,ConnectionManager::get_connection('mysql'));
+	public function test_drop_connection()
+	{
+		$connection = ConnectionManager::get_connection('mysql');
+		ConnectionManager::drop_connection('mysql');
+		$this->assert_not_same($connection, ConnectionManager::get_connection('mysql'));
 	}
 
-    public function test_gh_91_get_connection_with_null_connection_is_always_default()
-    {
-        $conn_one = ConnectionManager::get_connection('mysql');
-        $conn_two = ConnectionManager::get_connection();
-        $conn_three = ConnectionManager::get_connection('mysql');
-        $conn_four = ConnectionManager::get_connection();
-
-        $this->assert_same($conn_one, $conn_three);
-        $this->assert_same($conn_two, $conn_three);
-        $this->assert_same($conn_four, $conn_three);
-    }
+	public function test_drop_connection_with_default()
+	{
+		$connection = ConnectionManager::get_connection();
+		ConnectionManager::drop_connection();
+		$this->assert_not_same($connection, ConnectionManager::get_connection());
+	}
 }
-?>