diff --git a/src/BulletDynamics/Featherstone/btMultiBody.cpp b/src/BulletDynamics/Featherstone/btMultiBody.cpp
index 578814c36..7b30dd12a 100644
--- a/src/BulletDynamics/Featherstone/btMultiBody.cpp
+++ b/src/BulletDynamics/Featherstone/btMultiBody.cpp
@@ -112,6 +112,7 @@ btMultiBody::btMultiBody(int n_links,
 		m_userObjectPointer(0),
 		m_userIndex2(-1),
 		m_userIndex(-1),
+		m_companionId(-1),
 		m_linearDamping(0.04f),
 		m_angularDamping(0.04f),
 		m_useGyroTerm(true),
diff --git a/src/BulletDynamics/Featherstone/btMultiBodyConstraintSolver.cpp b/src/BulletDynamics/Featherstone/btMultiBodyConstraintSolver.cpp
index c8f7fb0aa..8c6cb6aa8 100644
--- a/src/BulletDynamics/Featherstone/btMultiBodyConstraintSolver.cpp
+++ b/src/BulletDynamics/Featherstone/btMultiBodyConstraintSolver.cpp
@@ -1664,4 +1664,4 @@ void  btMultiBodyConstraintSolver::solveMultiBodyGroup(btCollisionObject** bodie
 	m_tmpNumMultiBodyConstraints = 0;
 	
 
-}
\ No newline at end of file
+}