diff --git a/src/symba/symba_encounter_check.f90 b/src/symba/symba_encounter_check.f90
index 035d7fd3c..48672142e 100644
--- a/src/symba/symba_encounter_check.f90
+++ b/src/symba/symba_encounter_check.f90
@@ -43,10 +43,10 @@ module function symba_encounter_check_pl(self, param, system, dt, irec) result(l
          call pl%set_renc(irec)
 
          if (nplt == 0) then
-            call encounter_check_all_plpl(param, npl, pl%xh, pl%vh, pl%renc, dt, nenc, index1, index2, lvdotr)
+            call encounter_check_all_plpl(param, npl, pl%xh, pl%vb, pl%renc, dt, nenc, index1, index2, lvdotr)
          else
-            call encounter_check_all_plplm(param, nplm, nplt, pl%xh(:,1:nplm), pl%vh(:,1:nplm), pl%xh(:,nplm+1:npl), &
-                  pl%vh(:,nplm+1:npl), pl%renc(1:nplm), pl%renc(nplm+1:npl), dt, nenc, index1, index2, lvdotr)
+            call encounter_check_all_plplm(param, nplm, nplt, pl%xh(:,1:nplm), pl%vb(:,1:nplm), pl%xh(:,nplm+1:npl), &
+                  pl%vb(:,nplm+1:npl), pl%renc(1:nplm), pl%renc(nplm+1:npl), dt, nenc, index1, index2, lvdotr)
          end if
          
          lany_encounter = nenc > 0_I8B
@@ -136,7 +136,7 @@ module function symba_encounter_check(self, param, system, dt, irec) result(lany
                   i = self%index1(k)
                   j = self%index2(k)
                   xr(:) = pl%xh(:,j) - pl%xh(:,i)
-                  vr(:) = pl%vh(:,j) - pl%vh(:,i)
+                  vr(:) = pl%vb(:,j) - pl%vb(:,i)
                   rcrit12 = pl%renc(i) + pl%renc(j)
                   call encounter_check_one(xr(1), xr(2), xr(3), vr(1), vr(2), vr(3), rcrit12, dt, lencounter(lidx), self%lvdotr(k))
                   if (lencounter(lidx)) then
@@ -151,7 +151,7 @@ module function symba_encounter_check(self, param, system, dt, irec) result(lany
                   i = self%index1(k)
                   j = self%index2(k)
                   xr(:) = tp%xh(:,j) - pl%xh(:,i)
-                  vr(:) = tp%vh(:,j) - pl%vh(:,i)
+                  vr(:) = tp%vb(:,j) - pl%vb(:,i)
                   call encounter_check_one(xr(1), xr(2), xr(3), vr(1), vr(2), vr(3), pl%renc(i), dt, &
                                            lencounter(lidx), self%lvdotr(k))
                   if (lencounter(lidx)) then
@@ -213,7 +213,7 @@ module function symba_encounter_check_tp(self, param, system, dt, irec) result(l
 
       associate(tp => self, ntp => self%nbody, pl => system%pl, npl => system%pl%nbody)
          call pl%set_renc(irec)
-         call encounter_check_all_pltp(param, npl, ntp, pl%xh, pl%vh, tp%xh, tp%vh, pl%renc, dt, nenc, index1, index2, lvdotr) 
+         call encounter_check_all_pltp(param, npl, ntp, pl%xh, pl%vb, tp%xh, tp%vb, pl%renc, dt, nenc, index1, index2, lvdotr) 
    
          lany_encounter = nenc > 0
          if (lany_encounter) then