diff --git a/applications/solvers/heatTransfer/chtMultiRegionFoam/fluid/UEqn.H b/applications/solvers/heatTransfer/chtMultiRegionFoam/fluid/UEqn.H
index 35881bb544c8013cd3b2f314221a0ee602d20426..602a04a6e5711512f26630fc2527ea394dc6a750 100644
--- a/applications/solvers/heatTransfer/chtMultiRegionFoam/fluid/UEqn.H
+++ b/applications/solvers/heatTransfer/chtMultiRegionFoam/fluid/UEqn.H
@@ -4,7 +4,8 @@
         fvm::ddt(rho, U)
       + fvm::div(phi, U)
       + turb.divDevRhoReff(U)
-      + fvOptions(rho, U)
+       ==
+        fvOptions(rho, U)
     );
 
     UEqn().relax();