diff --git a/src/regionModels/surfaceFilmModels/thermoSingleLayer/thermoSingleLayer.C b/src/regionModels/surfaceFilmModels/thermoSingleLayer/thermoSingleLayer.C
index 765a22c99a..65a1e8e0fb 100644
--- a/src/regionModels/surfaceFilmModels/thermoSingleLayer/thermoSingleLayer.C
+++ b/src/regionModels/surfaceFilmModels/thermoSingleLayer/thermoSingleLayer.C
@@ -634,6 +634,9 @@ void thermoSingleLayer::evolveRegion()
     // Update film wall and surface temperatures
     updateSurfaceTemperatures();
 
+    // Solve continuity for deltaRho_
+    solveContinuity();
+
     // Update sub-models to provide updated source contributions
     updateSubmodels();