diff --git a/tardis/montecarlo/struct.py b/tardis/montecarlo/struct.py
index bc2946ea1bb..69e130c5469 100644
--- a/tardis/montecarlo/struct.py
+++ b/tardis/montecarlo/struct.py
@@ -13,7 +13,6 @@ class RPacket(Structure):
         ('next_line_id', c_int64),
         ('last_line', c_int64),
         ('close_line', c_int64),
-        ('recently_crossed_boundary', c_int64),
         ('current_continuum_id', c_int64),
         ('virtual_packet_flag', c_int64),
         ('virtual_packet', c_int64),
diff --git a/tardis/montecarlo/tests/test_cmontecarlo.py b/tardis/montecarlo/tests/test_cmontecarlo.py
index 3f6e1198ad2..15067aec213 100644
--- a/tardis/montecarlo/tests/test_cmontecarlo.py
+++ b/tardis/montecarlo/tests/test_cmontecarlo.py
@@ -26,7 +26,6 @@ def packet():
         'next_line_id': 1,
         'last_line': 0,
         'close_line': 0,
-        'recently_crossed_boundary': 1,
         'current_continuum_id': 1,
         'virtual_packet_flag': 1,
         'virtual_packet': 0,
@@ -128,22 +127,18 @@ def test_rpacket_doppler_factor(packet_params, model_params, expected, packet, m
 
 @pytest.mark.parametrize(
     ['packet_params', 'expected_params'],
-    [({'mu': 0.3, 'r': 7.5e14, 'recently_crossed_boundary': 1},
+    [({'mu': 0.3, 'r': 7.5e14},
       {'d_boundary': 259376919351035.88}),
 
-     ({'mu': 0.3, 'r': 7.5e14, 'recently_crossed_boundary': 0},
-      {'d_boundary': 259376919351035.88}),
-
-     ({'mu': -.3, 'r': 7.5e13, 'recently_crossed_boundary': 0},
+     ({'mu': -.3, 'r': 7.5e13},
       {'d_boundary': -664987228972291.5}),
 
-     ({'mu': -.3, 'r': 7.5e14, 'recently_crossed_boundary': 0},
+     ({'mu': -.3, 'r': 7.5e14},
       {'d_boundary': 709376919351035.9})]
 )
 def test_compute_distance2boundary(packet_params, expected_params, packet, model):
     packet.mu = packet_params['mu']
     packet.r = packet_params['r']
-    packet.recently_crossed_boundary = packet_params['recently_crossed_boundary']
 
     cmontecarlo_methods.compute_distance2boundary(byref(packet), byref(model))