diff --git a/src/BulletSoftBody/btDeformableMultiBodyConstraintSolver.cpp b/src/BulletSoftBody/btDeformableMultiBodyConstraintSolver.cpp
index fc293ba78..362451c0e 100644
--- a/src/BulletSoftBody/btDeformableMultiBodyConstraintSolver.cpp
+++ b/src/BulletSoftBody/btDeformableMultiBodyConstraintSolver.cpp
@@ -80,31 +80,14 @@ void btDeformableMultiBodyConstraintSolver::solveMultiBodyGroup(btCollisionObjec
 
 void btDeformableMultiBodyConstraintSolver::writeToSolverBody(btCollisionObject** bodies, int numBodies, const btContactSolverInfo& infoGlobal)
 {
-    btSISolverSingleIterationData siData(m_tmpSolverBodyPool,
-                                         m_tmpSolverContactConstraintPool,
-                                         m_tmpSolverNonContactConstraintPool,
-                                         m_tmpSolverContactFrictionConstraintPool,
-                                         m_tmpSolverContactRollingFrictionConstraintPool,
-                                         m_orderTmpConstraintPool,
-                                         m_orderNonContactConstraintPool,
-                                         m_orderFrictionConstraintPool,
-                                         m_tmpConstraintSizesPool,
-                                         m_resolveSingleConstraintRowGeneric,
-                                         m_resolveSingleConstraintRowLowerLimit,
-                                         m_resolveSplitPenetrationImpulse,
-                                         m_kinematicBodyUniqueIdToSolverBodyTable,
-                                         m_btSeed2,
-                                         m_fixedBodyId,
-                                         m_maxOverrideNumSolverIterations);
-    
     for (int i = 0; i < numBodies; i++)
     {
-        int bodyId = siData.getOrInitSolverBody(*bodies[i], infoGlobal.m_timeStep);
-        
+        int bodyId = getOrInitSolverBody(*bodies[i], infoGlobal.m_timeStep);
+
         btRigidBody* body = btRigidBody::upcast(bodies[i]);
         if (body && body->getInvMass())
         {
-            btSolverBody& solverBody = siData.m_tmpSolverBodyPool[bodyId];
+            btSolverBody& solverBody = m_tmpSolverBodyPool[bodyId];
             solverBody.m_linearVelocity = body->getLinearVelocity() - solverBody.m_deltaLinearVelocity;
             solverBody.m_angularVelocity = body->getAngularVelocity() - solverBody.m_deltaAngularVelocity;
         }