null: remove extra sign.

1 files changed, 2 insertions, 2 deletions

diff --git a/null.py b/null.py
index 05f2e9e..f001e39 100644
--- a/null.py
+++ b/null.py
@@ -71,7 +71,7 @@ def _null_geodesic_kernel(times, t0, events, pu_t_0,
     pu_X_0 = np.sqrt(alpha_0 * alpha_0 / gXX_0) * pu_t_0
 
     args = {
-        'fun'           : _null_geodesic_axis_rhs,
+        'fun'           : lambda t,x:_null_geodesic_axis_rhs(t,x,alpha, alpha_dX, alpha_dt, gXX, gXX_dX, gXX_dt),
         't_span'        : (0.0, 1e6),
         'y0'            : (t0, 0.0, pu_t_0, pu_X_0),
         'method'        : 'RK45',
@@ -127,7 +127,7 @@ def _events_bnd_null_geodesics(times, spatial_coords):
     event_x_bound_upper.terminal  = True
     event_x_bound_upper.direction = 1.0
 
-    def event_x_bound_lower(Lambda, y, sign, *args):
+    def event_x_bound_lower(Lambda, y, *args):
         x = y[1]
         return x - spatial_coords[0]
     event_x_bound_lower.terminal  = True