diff --git a/QtPyLoT.py b/QtPyLoT.py
index a1736525..dd3c740b 100755
--- a/QtPyLoT.py
+++ b/QtPyLoT.py
@@ -36,6 +36,7 @@ from pylot.core.read import (Data,
 from pylot.core.util import FILTERDEFAULTS
 from pylot.core.util import fnConstructor
 from pylot.core.util import checkurl
+from pylot.core.util import FormatError
 from pylot.core.util import layoutStationButtons
 from pylot.core.util import (FilterOptionsDialog,
                              MPLWidget,
diff --git a/pylot/core/util/__init__.py b/pylot/core/util/__init__.py
index ef703f2e..3d3ed5db 100755
--- a/pylot/core/util/__init__.py
+++ b/pylot/core/util/__init__.py
@@ -1,6 +1,7 @@
 from pylot.core.util.connection import checkurl
 from pylot.core.util.defaults import FILTERDEFAULTS
 from pylot.core.util.errors import OptionsError
+from pylot.core.util.errors import FormatError
 from pylot.core.util.layouts import layoutStationButtons
 from pylot.core.util.utils import fnConstructor
 from pylot.core.util.widgets import PickDlg