diff --git a/src/finiteVolume/cfdTools/general/porosityModel/porosityModel/porosityModel.C b/src/finiteVolume/cfdTools/general/porosityModel/porosityModel/porosityModel.C
index 0338e35154588ce72288dc1b0ba09c61cb356087..635b864c45b09bfdcf9b142ae34b0fa0d94b9e60 100644
--- a/src/finiteVolume/cfdTools/general/porosityModel/porosityModel/porosityModel.C
+++ b/src/finiteVolume/cfdTools/general/porosityModel/porosityModel/porosityModel.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2012-2016 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2012-2017 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -97,7 +97,12 @@ Foam::porosityModel::porosityModel
     name_(name),
     mesh_(mesh),
     dict_(dict),
-    coeffs_(dict.subDict(modelType + "Coeffs")),
+    coeffs_
+    (
+        dict.found(modelType + "Coeffs")
+      ? dict.subDict(modelType + "Coeffs")
+      : dict
+    ),
     active_(true),
     zoneName_(cellZoneName),
     cellZoneIDs_(),
@@ -105,7 +110,7 @@ Foam::porosityModel::porosityModel
 {
     if (zoneName_ == word::null)
     {
-        dict.lookup("active") >> active_;
+        dict.readIfPresent("active", active_);
         dict_.lookup("cellZone") >> zoneName_;
     }
 
@@ -227,8 +232,17 @@ bool Foam::porosityModel::writeData(Ostream& os) const
 
 bool Foam::porosityModel::read(const dictionary& dict)
 {
-    active_ = readBool(dict.lookup("active"));
-    coeffs_ = dict.subDict(type() + "Coeffs");
+    dict.readIfPresent("active", active_);
+
+    if (dict.found(type() + "Coeffs"))
+    {
+        coeffs_ = dict.subDict(type() + "Coeffs");
+    }
+    else
+    {
+        coeffs_ = dict;
+    }
+
     dict.lookup("cellZone") >> zoneName_;
     cellZoneIDs_ = mesh_.cellZones().findIndices(zoneName_);
 
diff --git a/tutorials/compressible/rhoPorousSimpleFoam/angledDuctImplicit/constant/porosityProperties b/tutorials/compressible/rhoPorousSimpleFoam/angledDuctImplicit/constant/porosityProperties
index b08090fea79c88f4efb0e0a8a4a418c45ffe30e1..4f99566f9d4507a1e37e7a89a91fc6242aeb707e 100644
--- a/tutorials/compressible/rhoPorousSimpleFoam/angledDuctImplicit/constant/porosityProperties
+++ b/tutorials/compressible/rhoPorousSimpleFoam/angledDuctImplicit/constant/porosityProperties
@@ -18,24 +18,21 @@ FoamFile
 porosity1
 {
     type            DarcyForchheimer;
-    active          yes;
+
     cellZone        porosity;
 
-    DarcyForchheimerCoeffs
-    {
-        d   (5e7 -1000 -1000);
-        f   (0 0 0);
+    d   (5e7 -1000 -1000);
+    f   (0 0 0);
 
-        coordinateSystem
+    coordinateSystem
+    {
+        type    cartesian;
+        origin  (0 0 0);
+        coordinateRotation
         {
-            type    cartesian;
-            origin  (0 0 0);
-            coordinateRotation
-            {
-                type    axesRotation;
-                e1  (0.70710678 0.70710678 0);
-                e2  (0 0 1);
-            }
+            type    axesRotation;
+            e1  (0.70710678 0.70710678 0);
+            e2  (0 0 1);
         }
     }
 }
diff --git a/tutorials/incompressible/porousSimpleFoam/angledDuctImplicit/constant/porosityProperties b/tutorials/incompressible/porousSimpleFoam/angledDuctImplicit/constant/porosityProperties
index a96f099ae0862f5c32b24111ef6db8eea6e54dae..ff7263af9a7ec2b4a35c39257ee6992df96a0b69 100644
--- a/tutorials/incompressible/porousSimpleFoam/angledDuctImplicit/constant/porosityProperties
+++ b/tutorials/incompressible/porousSimpleFoam/angledDuctImplicit/constant/porosityProperties
@@ -18,24 +18,21 @@ FoamFile
 porosity1
 {
     type            DarcyForchheimer;
-    active          yes;
+
     cellZone        porosity;
 
-    DarcyForchheimerCoeffs
-    {
-        d   (5e7 -1000 -1000);
-        f   (0 0 0);
+    d   (5e7 -1000 -1000);
+    f   (0 0 0);
 
-        coordinateSystem
+    coordinateSystem
+    {
+        type    cartesian;
+        origin  (0 0 0);
+        coordinateRotation
         {
-            type    cartesian;
-            origin  (0 0 0);
-            coordinateRotation
-            {
-                type    axesRotation;
-                e1      (0.70710678 0.70710678 0);
-                e2      (0 0 1);
-            }
+            type    axesRotation;
+            e1      (0.70710678 0.70710678 0);
+            e2      (0 0 1);
         }
     }
 }
diff --git a/tutorials/incompressible/porousSimpleFoam/straightDuctImplicit/constant/porosityProperties b/tutorials/incompressible/porousSimpleFoam/straightDuctImplicit/constant/porosityProperties
index 0e911d237808c86ddbdcf75ba6a9feadc0506d61..039ffe676349e0bb937031687573f712ccb902c2 100644
--- a/tutorials/incompressible/porousSimpleFoam/straightDuctImplicit/constant/porosityProperties
+++ b/tutorials/incompressible/porousSimpleFoam/straightDuctImplicit/constant/porosityProperties
@@ -18,24 +18,21 @@ FoamFile
 porosity1
 {
     type            DarcyForchheimer;
-    active          yes;
+
     cellZone        porosity;
 
-    DarcyForchheimerCoeffs
-    {
-        d   (5e7 -1000 -1000);
-        f   (0 0 0);
+    d   (5e7 -1000 -1000);
+    f   (0 0 0);
 
-        coordinateSystem
+    coordinateSystem
+    {
+        type    cartesian;
+        origin  (0 0 0);
+        coordinateRotation
         {
-            type    cartesian;
-            origin  (0 0 0);
-            coordinateRotation
-            {
-                type    axesRotation;
-                e1      (1 0 0);    //(0.70710678 0.70710678 0);
-                e2      (0 0 1);
-            }
+            type    axesRotation;
+            e1      (1 0 0);    //(0.70710678 0.70710678 0);
+            e2      (0 0 1);
         }
     }
 }