diff --git a/fipy/solvers/pysparse/linearJORSolver.py b/fipy/solvers/pysparse/linearJORSolver.py
index 707d1eaf21..8b2a7395b2 100644
--- a/fipy/solvers/pysparse/linearJORSolver.py
+++ b/fipy/solvers/pysparse/linearJORSolver.py
@@ -21,7 +21,7 @@ class LinearJORSolver(PysparseSolver):
     """
 
     def __init__(self, tolerance="default", criterion="default",
-                 iterations="default", relaxation=1.0):
+                 iterations="default", relaxation=1.0, precon=None):
         """
         Create a `LinearJORSolver` object.
 
@@ -36,6 +36,8 @@ def __init__(self, tolerance="default", criterion="default",
             Maximum number of iterative steps to perform.
         relaxation : float
             Fraction of update to apply
+        precon
+            *ignored*
         """
         super(LinearJORSolver, self).__init__(tolerance=tolerance, criterion=criterion,
                                               iterations=iterations, precon=None)