diff --git a/jbox2d-library/src/main/java/org/jbox2d/dynamics/joints/RopeJoint.java b/jbox2d-library/src/main/java/org/jbox2d/dynamics/joints/RopeJoint.java
index ec3a5689..53ae9fc7 100644
--- a/jbox2d-library/src/main/java/org/jbox2d/dynamics/joints/RopeJoint.java
+++ b/jbox2d-library/src/main/java/org/jbox2d/dynamics/joints/RopeJoint.java
@@ -101,6 +101,8 @@ public void initVelocityConstraints(final SolverData data) {
       m_u.setZero();
       m_mass = 0.0f;
       m_impulse = 0.0f;
+      pool.pushRot(2);
+      pool.pushVec2(1);
       return;
     }