diff --git a/src/cpu/MultiphaseFlow/SimulationObservers/WriteSharpInterfaceQuantitiesSimulationObserver.cpp b/src/cpu/MultiphaseFlow/SimulationObservers/WriteSharpInterfaceQuantitiesSimulationObserver.cpp
index f5d03888afc18482b0af21b1bfc7a4289468dd58..64ef23bcffb2d9b5478b1f57590d7d297ab08f52 100644
--- a/src/cpu/MultiphaseFlow/SimulationObservers/WriteSharpInterfaceQuantitiesSimulationObserver.cpp
+++ b/src/cpu/MultiphaseFlow/SimulationObservers/WriteSharpInterfaceQuantitiesSimulationObserver.cpp
@@ -173,8 +173,8 @@ void WriteSharpInterfaceQuantitiesSimulationObserver::addDataMQ(SPtr<Block3D> bl
     real phi;
     real vx1, vx2, vx3, rho;
     real densityRatio = kernel->getDensityRatio();
-    real phiL = kernel->getPhiL();
-    real phiH = kernel->getPhiH();
+    //real phiL = kernel->getPhiL();
+    //real phiH = kernel->getPhiH();
 
     // knotennummerierung faengt immer bei 0 an!
     int SWB, SEB, NEB, NWB, SWT, SET, NET, NWT;