diff --git a/src/modules/swiftest_classes.f90 b/src/modules/swiftest_classes.f90
index 92d671e9b..0842ab154 100644
--- a/src/modules/swiftest_classes.f90
+++ b/src/modules/swiftest_classes.f90
@@ -433,7 +433,6 @@ module swiftest_classes
       integer(I4B)                              :: nenc   !! Total number of encounters
       logical,      dimension(:),   allocatable :: lvdotr !! relative vdotr flag
       integer(I4B), dimension(:),   allocatable :: status !! status of the interaction
-      integer(I8B), dimension(:),   allocatable :: kidx   !! index value of the encounter from the master k_plpl encounter list
       integer(I4B), dimension(:),   allocatable :: index1 !! position of the first body in the encounter
       integer(I4B), dimension(:),   allocatable :: index2 !! position of the second body in the encounter
       integer(I4B), dimension(:),   allocatable :: id1    !! id of the first body in the encounter
diff --git a/src/setup/setup.f90 b/src/setup/setup.f90
index 41c0d9fba..18d8f2189 100644
--- a/src/setup/setup.f90
+++ b/src/setup/setup.f90
@@ -85,7 +85,6 @@ module subroutine setup_encounter(self, n)
 
       if (allocated(self%lvdotr)) deallocate(self%lvdotr)
       if (allocated(self%status)) deallocate(self%status)
-      if (allocated(self%kidx)) deallocate(self%kidx)
       if (allocated(self%index1)) deallocate(self%index1)
       if (allocated(self%index2)) deallocate(self%index2)
       if (allocated(self%id1)) deallocate(self%id1)
@@ -101,7 +100,6 @@ module subroutine setup_encounter(self, n)
 
       allocate(self%lvdotr(n))
       allocate(self%status(n))
-      allocate(self%kidx(n))
       allocate(self%index1(n))
       allocate(self%index2(n))
       allocate(self%id1(n))
@@ -114,7 +112,6 @@ module subroutine setup_encounter(self, n)
 
       self%lvdotr(:) = .false.
       self%status(:) = INACTIVE
-      self%kidx(:) = 0_I8B
       self%index1(:) = 0
       self%index2(:) = 0
       self%id1(:) = 0
diff --git a/src/symba/symba_encounter_check.f90 b/src/symba/symba_encounter_check.f90
index 1df9ca03c..cd6b81577 100644
--- a/src/symba/symba_encounter_check.f90
+++ b/src/symba/symba_encounter_check.f90
@@ -173,9 +173,12 @@ module function symba_encounter_check_pl(self, param, system, dt, irec) result(l
          else
             nplm = pl%nplm
             call symba_encounter_check_all_triangular(npl, nplm, pl%xh, pl%vh, pl%rhill, dt, irec, lvdotr, index1, index2, nenc)
-            call move_alloc(lvdotr, plplenc_list%lvdotr)					
-            call move_alloc(index1, plplenc_list%index1) 					
-            call move_alloc(index2, plplenc_list%index2)
+            lany_encounter = nenc > 0
+            if (lany_encounter) then
+               call move_alloc(lvdotr, plplenc_list%lvdotr)					
+               call move_alloc(index1, plplenc_list%index1) 					
+               call move_alloc(index2, plplenc_list%index2)
+            end if
          end if
 
          if (lany_encounter) then 
@@ -183,7 +186,6 @@ module function symba_encounter_check_pl(self, param, system, dt, irec) result(l
                i = plplenc_list%index1(k)
                j = plplenc_list%index2(k)
                call util_index_eucl_ij_to_k(npl, i, j, kenc)
-               plplenc_list%kidx(k) = kenc
                plplenc_list%id1(k) = pl%id(plplenc_list%index1(k))					
                plplenc_list%id2(k) = pl%id(plplenc_list%index2(k))					
                plplenc_list%status(k) = ACTIVE
diff --git a/src/symba/symba_kick.f90 b/src/symba/symba_kick.f90
index 414c89805..fd0354612 100644
--- a/src/symba/symba_kick.f90
+++ b/src/symba/symba_kick.f90
@@ -56,7 +56,8 @@ module subroutine symba_kick_getacch_pl(self, system, param, t, lbeg)
                ah_enc(:,:) = 0.0_DP
                nplplenc = int(plplenc_list%nenc, kind=I8B)
                allocate(k_plpl_enc(2,nplplenc))
-               k_plpl_enc(:,1:nplplenc) = pl%k_plpl(:,plplenc_list%kidx(1:nplplenc))
+               k_plpl_enc(1,1:nplplenc) = plplenc_list%index1(1:nplplenc)
+               k_plpl_enc(2,1:nplplenc) = plplenc_list%index2(1:nplplenc)
                call kick_getacch_int_all_flat_pl(npl, nplplenc, k_plpl_enc, pl%xh, pl%Gmass, pl%radius, ah_enc)
                pl%ah(:,1:npl) = pl%ah(:,1:npl) - ah_enc(:,1:npl)
             end if
diff --git a/src/util/util_copy.f90 b/src/util/util_copy.f90
index 60d93e45e..f271c1c2e 100644
--- a/src/util/util_copy.f90
+++ b/src/util/util_copy.f90
@@ -15,7 +15,6 @@ module subroutine util_copy_encounter(self, source)
          self%nenc = n
          self%lvdotr(1:n) = source%lvdotr(1:n) 
          self%status(1:n) = source%status(1:n) 
-         self%kidx(1:n) = source%kidx(1:n)
          self%index1(1:n) = source%index1(1:n)
          self%index2(1:n) = source%index2(1:n)
          self%id1(1:n) = source%id1(1:n)
diff --git a/src/util/util_spill.f90 b/src/util/util_spill.f90
index 16039c4da..e9d243cb6 100644
--- a/src/util/util_spill.f90
+++ b/src/util/util_spill.f90
@@ -373,7 +373,6 @@ module subroutine util_spill_encounter(self, discards, lspill_list, ldestructive
       associate(keeps => self)
          call util_spill(keeps%lvdotr, discards%lvdotr, lspill_list, ldestructive)
          call util_spill(keeps%status, discards%status, lspill_list, ldestructive)
-         call util_spill(keeps%kidx, discards%kidx, lspill_list, ldestructive)
          call util_spill(keeps%index1, discards%index1, lspill_list, ldestructive)
          call util_spill(keeps%index2, discards%index2, lspill_list, ldestructive)
          call util_spill(keeps%id1, discards%id1, lspill_list, ldestructive)