diff --git a/src/regionModels/surfaceFilmModels/thermoSingleLayer/thermoSingleLayerI.H b/src/regionModels/surfaceFilmModels/thermoSingleLayer/thermoSingleLayerI.H
index 0905176adf..5382fecb37 100644
--- a/src/regionModels/surfaceFilmModels/thermoSingleLayer/thermoSingleLayerI.H
+++ b/src/regionModels/surfaceFilmModels/thermoSingleLayer/thermoSingleLayerI.H
@@ -26,6 +26,7 @@ License
 #include "thermoSingleLayer.H"
 #include "heatTransferModel.H"
 #include "filmRadiationModel.H"
+#include "phaseChangeModel.H"
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //