diff --git a/solvers/IncNavierStokesSolver/EquationSystems/Extrapolate.cpp b/solvers/IncNavierStokesSolver/EquationSystems/Extrapolate.cpp
index 4af9df7c16af23aa01e61a21524976f3fa33e51e..53ca93ab77814fd34de0e179430b5ecd0fd75157 100644
--- a/solvers/IncNavierStokesSolver/EquationSystems/Extrapolate.cpp
+++ b/solvers/IncNavierStokesSolver/EquationSystems/Extrapolate.cpp
@@ -49,7 +49,8 @@ namespace Nektar
     {
         typedef Loki::SingletonHolder<ExtrapolateFactory,
                                       Loki::CreateUsingNew,
-                                      Loki::NoDestroy > Type;
+                                      Loki::NoDestroy,
+                                      Loki::SingleThreaded > Type;
         return Type::Instance();
     }