diff --git a/src/dynamicMesh/motionSolvers/motionSolver/motionSolver.H b/src/dynamicMesh/motionSolvers/motionSolver/motionSolver.H
index 660244b3c..54cf7987d 100644
--- a/src/dynamicMesh/motionSolvers/motionSolver/motionSolver.H
+++ b/src/dynamicMesh/motionSolvers/motionSolver/motionSolver.H
@@ -105,7 +105,6 @@ public:
         class iNew
         {
             const polyMesh& mesh_;
-            mutable label index_;
 
         public: