diff --git a/tutorials/combustion/PDRFoam/constant/combustionProperties b/tutorials/combustion/PDRFoam/constant/combustionProperties
index 246db9e5fb..4f086ed72e 100644
--- a/tutorials/combustion/PDRFoam/constant/combustionProperties
+++ b/tutorials/combustion/PDRFoam/constant/combustionProperties
@@ -17,31 +17,30 @@ FoamFile
 
 laminarFlameSpeedCorrelation SCOPE;
 
-fuel	Propane;
+fuel        Propane;
 
-fuelFile	"fuels/propane.dat";
+fuelFile    "fuels/propane.dat";
 
-ignite	yes;
+ignite      yes;
 
 ignitionSites
 (
-	    
+
     {
-		location        (1.5 1.5 0.5);
-		diameter        0.005;
-		start           1E-05;
-		duration        0.05;
-		strength        10.0;
+        location        (1.5 1.5 0.5);
+        diameter        0.005;
+        start           1E-05;
+        duration        0.05;
+        strength        10.0;
 	}
 );
 
-ignitionSphereFraction	1.;
+ignitionSphereFraction  1;
 
-ignitionThickness	ignitionThickness [0 1 0 0 0 0 0] 0.05;
+ignitionThickness   ignitionThickness [0 1 0 0 0 0 0] 0;
 
-ignitionCircleFraction	0.5;
+ignitionCircleFraction  0;
+
+ignitionKernelArea ignitionKernelArea [0 2 0 0 0 0 0] 0;
 
 // ************************************************************************* //
-
- 	;
-
diff --git a/tutorials/combustion/PDRFoam/constant/thermophysicalProperties b/tutorials/combustion/PDRFoam/constant/thermophysicalProperties
index 1df4701d9b..f6c864dfed 100644
--- a/tutorials/combustion/PDRFoam/constant/thermophysicalProperties
+++ b/tutorials/combustion/PDRFoam/constant/thermophysicalProperties
@@ -31,7 +31,7 @@ fuel
     As              1.67212e-06;
     Ts              170.672;
 }
-	    
+
 
 oxidant
 {
@@ -48,15 +48,15 @@ oxidant
 
 burntProducts
 {
-     nMoles         1;
-     molWeight      28.3233;
-	 Tlow           200;	
-	 Thigh          6000;	
-	 Tcommon        1000;
-	 highCpCoeffs   ( 3.10558 0.00179747 -5.94696e-07 9.05605e-11 -5.08443e-15 -11003.6 5.12104 );
-	 lowCpCoeffs    ( 3.49796 0.000638555 -1.83881e-07 1.20989e-09 -7.68691e-13 -11080.5 3.18188 );
-	 As             1.67212e-06; 
-	 Ts             170.672;
+    nMoles         1;
+    molWeight      28.3233;
+    Tlow           200;
+    Thigh          6000;
+    Tcommon        1000;
+    highCpCoeffs   ( 3.10558 0.00179747 -5.94696e-07 9.05605e-11 -5.08443e-15 -11003.6 5.12104 );
+    lowCpCoeffs    ( 3.49796 0.000638555 -1.83881e-07 1.20989e-09 -7.68691e-13 -11080.5 3.18188 );
+    As             1.67212e-06;
+    Ts             170.672;
 }
 
 // ************************************************************************* //