diff --git a/os_brick/initiator/connectors/scaleio.py b/os_brick/initiator/connectors/scaleio.py
index 133884a62..2f1eeb40d 100644
--- a/os_brick/initiator/connectors/scaleio.py
+++ b/os_brick/initiator/connectors/scaleio.py
@@ -100,7 +100,7 @@ class ScaleIOConnector(base.BaseLinuxConnector):
             password = priv_scaleio.get_connector_password(
                 CONNECTOR_CONF_PATH,
                 connection_properties['config_group'],
-                connection_properties['failed_over'])
+                connection_properties.get('failed_over', False))
             return password, None
         except Exception as e:
             msg = _("Error getting ScaleIO connector password from "
diff --git a/os_brick/tests/initiator/connectors/test_scaleio.py b/os_brick/tests/initiator/connectors/test_scaleio.py
index a8f7ed8b1..7679fcb35 100644
--- a/os_brick/tests/initiator/connectors/test_scaleio.py
+++ b/os_brick/tests/initiator/connectors/test_scaleio.py
@@ -319,3 +319,14 @@ class ScaleIOConnectorTestCase(test_connector.ConnectorTestCase):
                          mock_device_size.return_value)
         self.rescan_vols_mock.assert_called_once_with(
             self.connector.RESCAN_VOLS_OP_CODE)
+
+    def test_connection_properties_without_failed_over(self):
+        """Handle connection properties with 'failed_over' missing"""
+        connection_properties = dict(self.fake_connection_properties)
+        connection_properties.pop('failed_over')
+
+        self.connector.connect_volume(connection_properties)
+        self.get_password_mock.assert_called_once_with(
+            scaleio.CONNECTOR_CONF_PATH,
+            connection_properties['config_group'],
+            False)