diff --git a/doc/underlying-science/PSHA-with-OQ-engine.rst b/doc/underlying-science/PSHA-with-OQ-engine.rst
index d09ddc963f5..1161c530f51 100644
--- a/doc/underlying-science/PSHA-with-OQ-engine.rst
+++ b/doc/underlying-science/PSHA-with-OQ-engine.rst
@@ -445,7 +445,7 @@ rupture by rupture basis but a classification scheme is used instead.
 Ruptures are classified in terms of the following parameters:
 
 - magnitude (:math:`M`)
-- distance to rupture surface-projection (Joyner-Boore distance) (:math:`r_{jb}`)
+- closest distance to rupture surface (:math:`r_{rup}`)
 - longitude and latitude of rupture surface-projection closest
   point (:math:`\lambda` , :math:`\phi`) 
 - tectonic region type (:math:`TRT`)
diff --git a/openquake/hazardlib/calc/disagg.py b/openquake/hazardlib/calc/disagg.py
index c013f4b0723..69a620ada92 100644
--- a/openquake/hazardlib/calc/disagg.py
+++ b/openquake/hazardlib/calc/disagg.py
@@ -766,7 +766,7 @@ def disaggregation(
     scenarios classified in terms of:
 
     - rupture magnitude
-    - Joyner-Boore distance from rupture surface to site
+    - Closest distance to rupture surface
     - longitude and latitude of the surface projection of a rupture's point
       closest to ``site``
     - epsilon: number of standard deviations by which an intensity measure