diff --git a/src/swiftest/swiftest_obl.f90 b/src/swiftest/swiftest_obl.f90
index fd0260fc4..273a97c5e 100644
--- a/src/swiftest/swiftest_obl.f90
+++ b/src/swiftest/swiftest_obl.f90
@@ -221,7 +221,7 @@ module subroutine swiftest_obl_acc_pl(self, nbody_system)
 
       associate(pl => self, cb => nbody_system%cb)
          npl = self%nbody
-         call swiftest_obl_acc(npl, cb%Gmass, cb%j2rp2, cb%j4rp4, pl%rh, pl%lmask, pl%aobl, pl%Gmass, cb%aobl)
+         call swiftest_obl_acc(npl, cb%Gmass, cb%j2rp2, cb%j4rp4, pl%rh, pl%lmask, pl%aobl, cb%rot, pl%Gmass, cb%aobl)
 
 #ifdef DOCONLOC
          do concurrent(i = 1:npl, pl%lmask(i)) shared(cb,pl)
diff --git a/src/swiftest/swiftest_sph.f90 b/src/swiftest/swiftest_sph.f90
index 933d716e1..a981d099c 100644
--- a/src/swiftest/swiftest_sph.f90
+++ b/src/swiftest/swiftest_sph.f90
@@ -48,7 +48,12 @@ module subroutine swiftest_sph_g_acc_one(GMcb, r_0, phi, theta, rh, c_lm, g_sph,
         l_max = size(c_lm, 2) - 1
         N = (l_max + 1) * (l_max + 2) / 2
         allocate(p(N),p_deriv(N))
-        call PlmON_d1(p, p_deriv, l_max, cos(theta))      ! Orthonormalized Associated Legendre Polynomials and the 1st Derivative
+
+        if(cos(theta) > epsilon(0.0_DP)) then
+            call PlmON_d1(p, p_deriv, l_max, cos(theta))      ! Orthonormalized Associated Legendre Polynomials and the 1st Derivative
+        else
+            call PlmON_d1(p, p_deriv, l_max, 0.0_DP)
+        end if
 
         do l = 1, l_max ! skipping the l = 0 term; It is the spherical body term
             do m = 0, l