diff --git a/tutorials/incompressible/simpleFoam/windTurbineTerrain/constant/sourcesProperties b/tutorials/incompressible/simpleFoam/windTurbineTerrain/constant/sourcesProperties
index 90b086769a..65578ad1e9 100644
--- a/tutorials/incompressible/simpleFoam/windTurbineTerrain/constant/sourcesProperties
+++ b/tutorials/incompressible/simpleFoam/windTurbineTerrain/constant/sourcesProperties
@@ -18,10 +18,10 @@ FoamFile
 disk1
 {
     typeModel       actuationDiskSource;
-    active          on;            // on/off switch
-    timeStart       0.0;           // start time
+    active          on;             // on/off switch
+    timeStart       0.0;            // start time
     duration        1000.0;         // duration
-    selectionMode   cellSet;       // cellSet // points //cellZone
+    selectionMode   cellZone;       // cellSet // points //cellZone
     cellSet         actuationDisk1; // cellSet name when selectionMode = cellSet
     cellZone        actuationDisk1; // cellZone name when selectionMode = cellZone
 
@@ -37,10 +37,10 @@ disk1
 disk2
 {
     typeModel       actuationDiskSource;
-    active          on;            // on/off switch
-    timeStart       0.0;           // start time
+    active          on;             // on/off switch
+    timeStart       0.0;            // start time
     duration        1000.0;         // duration
-    selectionMode   cellSet;       // cellSet // points //cellZone
+    selectionMode   cellZone;       // cellSet // points //cellZone
     cellSet         actuationDisk2; // cellSet name when selectionMode = cellSet
     cellZone        actuationDisk2; // cellZone name when selectionMode = cellZone