diff --git a/dumux/decoupled/2p/variableclass2p.hh b/dumux/decoupled/2p/variableclass2p.hh
index d17669bc66ddb2217111c3a7f58a89e0d36a8adc..a7aef620053367bd5992b43f16033fa6cf7823e5 100644
--- a/dumux/decoupled/2p/variableclass2p.hh
+++ b/dumux/decoupled/2p/variableclass2p.hh
@@ -278,6 +278,7 @@ public:
          fracFlowFunc_[i].resize(size);
          }
          velocitySecondPhase_.resize(size);
+         velocitySecondPhase_ = Dune::FieldVector<Scalar, dim>(0);
          saturation_.resize(size);
          capillaryPressure_.resize(size);
          volumecorrection_.resize(size);