diff --git a/pylj/mc.py b/pylj/mc.py
index 277bdd8..eb2b5d6 100644
--- a/pylj/mc.py
+++ b/pylj/mc.py
@@ -40,8 +40,6 @@ def sample(particles, box_length, total_energy, system):
         Information about the particles.
     box_length: float
         Length of a single dimension of the simulation square, in Angstrom.
-    initial_particles: util.particle_dt, array-like
-        Information about the initial particle conformation.
     total_energy: float
         The total system energy.
     system: System