minor import change to fix a failing test
@@ -8,7 +8,7 @@ from astropy.time import Time
from astropy.units import Quantity
from gammapy.utils.fits import LazyFitsData, earth_location_from_dict
from gammapy.utils.testing import Checker
-from gammapy.irf.io import load_irf_dict_from_file
+from gammapy.irf import load_irf_dict_from_file
from .event_list import EventList, EventListChecker
from .filters import ObservationFilter
from .gti import GTI
