diff --git a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/heatExchanger/system/air/topoSetDict.1 b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/heatExchanger/system/air/topoSetDict.1
index 9d58910e8..ec3896ad1 100644
--- a/tutorials/heatTransfer/chtMultiRegionSimpleFoam/heatExchanger/system/air/topoSetDict.1
+++ b/tutorials/heatTransfer/chtMultiRegionSimpleFoam/heatExchanger/system/air/topoSetDict.1
@@ -51,7 +51,7 @@ actions
     }
 
     {
-        name    rotorBlades;
+        name    rotorBladesFaceSet;
         type    faceSet;
         action  new;
         source  faceToFace;
@@ -62,7 +62,7 @@ actions
     }
 
     {
-        name    rotorBlades;
+        name    rotorBladesFaceSet;
         type    faceSet;
         action  subset;
         source  boxToFace;