diff --git a/src/physics.F90 b/src/physics.F90
index 86650d3141..2a552c875b 100644
--- a/src/physics.F90
+++ b/src/physics.F90
@@ -2,7 +2,7 @@ module physics
 
   use ace_header,      only: Nuclide, Reaction, DistEnergy
   use constants
-  use cross_section,   only: calculate_xs, find_energy_index
+  use cross_section,   only: calculate_xs
   use endf,            only: reaction_name, is_fission, is_scatter
   use error,           only: fatal_error, warning
   use fission,         only: nu_total, nu_prompt, nu_delayed
@@ -198,9 +198,6 @@ contains
     ! Reset number of particles banked during collision
     p % n_bank = 0
 
-    ! find energy index, interpolation factor
-    call find_energy_index(p)
-
   end subroutine collision
 
 !===============================================================================