diff --git a/tutorials/heatTransfer/buoyantSimpleFoam/circuitBoardCooling/system/changeDictionaryDict b/tutorials/heatTransfer/buoyantSimpleFoam/circuitBoardCooling/system/changeDictionaryDict
index 0bc3e79b5c..f379d7dd7c 100644
--- a/tutorials/heatTransfer/buoyantSimpleFoam/circuitBoardCooling/system/changeDictionaryDict
+++ b/tutorials/heatTransfer/buoyantSimpleFoam/circuitBoardCooling/system/changeDictionaryDict
@@ -96,12 +96,6 @@ dictionaryReplacement
                 {
                     kappa           1.0;
                 }
-                radiation
-                {
-                    sigmaS          0;
-                    kappaRad        0;
-                    emissivity      0;
-                }
                 thermodynamics
                 {
                     Hf              0;
diff --git a/tutorials/heatTransfer/buoyantSimpleFoam/circuitBoardCooling/system/changeDictionaryDict.baffle b/tutorials/heatTransfer/buoyantSimpleFoam/circuitBoardCooling/system/changeDictionaryDict.baffle
index 15a97c9a89..770264278f 100644
--- a/tutorials/heatTransfer/buoyantSimpleFoam/circuitBoardCooling/system/changeDictionaryDict.baffle
+++ b/tutorials/heatTransfer/buoyantSimpleFoam/circuitBoardCooling/system/changeDictionaryDict.baffle
@@ -101,12 +101,6 @@ dictionaryReplacement
                 {
                     kappa           1;
                 }
-                radiation
-                {
-                    sigmaS          0;
-                    kappaRad        0;
-                    emissivity      0;
-                }
                 thermodynamics
                 {
                     Hf              0;