diff --git a/bilby/gw/likelihood.py b/bilby/gw/likelihood.py
index d1932c15edca4f5697084a46b23d215a4720db14..409ca05d1f125fdcdcd452f53d964d945c55bac5 100644
--- a/bilby/gw/likelihood.py
+++ b/bilby/gw/likelihood.py
@@ -19,7 +19,7 @@ from ..core.utils import (
     logger, UnsortedInterp2d, BilbyJsonEncoder, decode_bilby_json,
     create_time_series)
 from ..core.prior import Interped, Prior, Uniform
-from bilby.gw.detector import InterferometerList
+from .detector import InterferometerList
 from .prior import BBHPriorDict
 from .source import lal_binary_black_hole
 from .utils import noise_weighted_inner_product, build_roq_weights, blockwise_dot_product