diff --git a/gstlal-inspiral/python/stats/inspiral_lr.py b/gstlal-inspiral/python/stats/inspiral_lr.py
index 34c1e363e7591808bd5f993823f771db486cbabf..a96f05c5034dfc4ee080afd92a1a9375adcb0861 100644
--- a/gstlal-inspiral/python/stats/inspiral_lr.py
+++ b/gstlal-inspiral/python/stats/inspiral_lr.py
@@ -526,7 +526,7 @@ class LnSignalDensity(LnLRDensity):
 		xml = cls.get_xml_root(xml, name)
 		self = super(LnSignalDensity, cls).from_xml(xml, name)
 		self.horizon_history = horizonhistory.HorizonHistories.from_xml(xml, u"horizon_history")
-		self.population_model_file = ligolw_params.get_pyvalue(xml, u"population_model_file")
+		self.population_model_file = ligolw_param.get_pyvalue(xml, u"population_model_file")
 		self.population_model = inspiral_intrinsics.SourcePopulationModel(self.template_ids, filename = self.population_model_file)
 		return self