diff --git a/src/cpu/MultiphaseFlow/SimulationObservers/WriteSharpInterfaceQuantitiesSimulationObserver.cpp b/src/cpu/MultiphaseFlow/SimulationObservers/WriteSharpInterfaceQuantitiesSimulationObserver.cpp
index 9e837b8d123c127fc8e27e7e969e347a4679516e..f5d03888afc18482b0af21b1bfc7a4289468dd58 100644
--- a/src/cpu/MultiphaseFlow/SimulationObservers/WriteSharpInterfaceQuantitiesSimulationObserver.cpp
+++ b/src/cpu/MultiphaseFlow/SimulationObservers/WriteSharpInterfaceQuantitiesSimulationObserver.cpp
@@ -267,7 +267,7 @@ void WriteSharpInterfaceQuantitiesSimulationObserver::addDataMQ(SPtr<Block3D> bl
                     real rhoH = 1.0;
                     real rhoL = 1.0 / densityRatio;
                     // real rhoToPhi = (1.0 - 1.0/densityRatio);
-                    real rhoToPhi = (rhoH - rhoL) / (phiH - phiL);
+                    //real rhoToPhi = (rhoH - rhoL) / (phiH - phiL);
 
                     // rho = phi[ZERO] + (1.0 - phi[ZERO])*1.0/densityRatio;