diff --git a/src/immersedBoundary/immersedBoundaryTurbulence/wallFunctions/immersedBoundaryEpsilonWallFunction/immersedBoundaryEpsilonWallFunctionFvPatchScalarField.C b/src/immersedBoundary/immersedBoundaryTurbulence/wallFunctions/immersedBoundaryEpsilonWallFunction/immersedBoundaryEpsilonWallFunctionFvPatchScalarField.C
index 164aa35f7..102fc5f8c 100644
--- a/src/immersedBoundary/immersedBoundaryTurbulence/wallFunctions/immersedBoundaryEpsilonWallFunction/immersedBoundaryEpsilonWallFunctionFvPatchScalarField.C
+++ b/src/immersedBoundary/immersedBoundaryTurbulence/wallFunctions/immersedBoundaryEpsilonWallFunction/immersedBoundaryEpsilonWallFunctionFvPatchScalarField.C
@@ -62,14 +62,31 @@ immersedBoundaryEpsilonWallFunctionFvPatchScalarField
     const dictionary& dict
 )
 :
-    epsilonWallFunctionFvPatchScalarField(p, iF, dict),
+    epsilonWallFunctionFvPatchScalarField(p, iF),   // Do not read mixed data
     immersedBoundaryFieldBase<scalar>
     (
         p,
         Switch(dict.lookup("setDeadValue")),
         readScalar(dict.lookup("deadValue"))
     )
-{}
+{
+    // Since patch does not read a dictionary, the patch type needs to be read
+    // manually.  HJ, 6/Sep/2018
+    this->readPatchType(dict);
+
+    if (!isType<immersedBoundaryFvPatch>(p))
+    {
+        FatalIOErrorInFunction(dict)
+            << "\n    patch type '" << p.type()
+            << "' not constraint type '" << typeName << "'"
+            << "\n    for patch " << p.name()
+            << " of field " << this->dimensionedInternalField().name()
+            << " in file " << this->dimensionedInternalField().objectPath()
+            << exit(FatalIOError);
+    }
+
+    scalarField::operator=(this->patchInternalField());
+}
 
 
 immersedBoundaryEpsilonWallFunctionFvPatchScalarField::
@@ -81,14 +98,35 @@ immersedBoundaryEpsilonWallFunctionFvPatchScalarField
     const fvPatchFieldMapper& mapper
 )
 :
-    epsilonWallFunctionFvPatchScalarField(ptf, p, iF, mapper),
+    epsilonWallFunctionFvPatchScalarField(p, iF), // Do not map mixed data.  Set patchType later
     immersedBoundaryFieldBase<scalar>
     (
         p,
         ptf.setDeadValue(),
         ptf.deadValue()
     )
-{}
+{
+    // Note: NO MAPPING.  Fields are created on the immersed boundary
+    // HJ, 12/Apr/2012
+    if (!isType<immersedBoundaryFvPatch>(p))
+    {
+        FatalErrorInFunction
+            << "\n    patch type '" << p.type()
+            << "' not constraint type '" << typeName << "'"
+            << "\n    for patch " << p.name()
+            << " of field " << this->dimensionedInternalField().name()
+            << " in file " << this->dimensionedInternalField().objectPath()
+            << exit(FatalIOError);
+    }
+
+    // Copy the patch type since mixed data was not mapped
+    this->setPatchType(ptf);
+
+    // On creation of the mapped field, the internal field is dummy and
+    // cannot be used.  Initialise the value to avoid errors
+    // HJ, 1/Dec/2017
+    scalarField::operator=(SMALL);
+}
 
 
 immersedBoundaryEpsilonWallFunctionFvPatchScalarField::
@@ -182,7 +220,6 @@ void immersedBoundaryEpsilonWallFunctionFvPatchScalarField::updateCoeffs()
     // HJ, 20/May/2018
     if (db().foundObject<volScalarField>(GName()))
     {
-        Info<< "Updating epsilon" << endl;
         epsilonWallFunctionFvPatchScalarField::updateCoeffs();
     }
 }
diff --git a/src/immersedBoundary/immersedBoundaryTurbulence/wallFunctions/immersedBoundaryKqRWallFunction/immersedBoundaryKqRWallFunctionFvPatchField.C b/src/immersedBoundary/immersedBoundaryTurbulence/wallFunctions/immersedBoundaryKqRWallFunction/immersedBoundaryKqRWallFunctionFvPatchField.C
index 29eb8f5a3..72c36fe28 100644
--- a/src/immersedBoundary/immersedBoundaryTurbulence/wallFunctions/immersedBoundaryKqRWallFunction/immersedBoundaryKqRWallFunctionFvPatchField.C
+++ b/src/immersedBoundary/immersedBoundaryTurbulence/wallFunctions/immersedBoundaryKqRWallFunction/immersedBoundaryKqRWallFunctionFvPatchField.C
@@ -82,7 +82,7 @@ immersedBoundaryKqRWallFunctionFvPatchField
     const dictionary& dict
 )
 :
-    kqRWallFunctionFvPatchField<Type>(p, iF, dict),
+    kqRWallFunctionFvPatchField<Type>(p, iF),   // Do not read mixed data
     immersedBoundaryFieldBase<Type>
     (
         p,
@@ -90,10 +90,10 @@ immersedBoundaryKqRWallFunctionFvPatchField
         pTraits<Type>(dict.lookup("deadValue"))
     )
 {
-    this->checkType();
     this->readPatchType(dict);
+    this->checkType();
 
-    *this == this->patchInternalField();
+    Field<Type>::operator=(this->patchInternalField());
 }
 
 
@@ -107,7 +107,7 @@ immersedBoundaryKqRWallFunctionFvPatchField
     const fvPatchFieldMapper& mapper
 )
 :
-    kqRWallFunctionFvPatchField<Type>(ptf, p, iF, mapper),
+    kqRWallFunctionFvPatchField<Type>(p, iF), // Do not map mixed data.  Set patchType later
     immersedBoundaryFieldBase<Type>
     (
         p,
@@ -117,6 +117,10 @@ immersedBoundaryKqRWallFunctionFvPatchField
 {
     this->setPatchType(ptf);
     this->checkType();
+
+    // cannot be used.  Initialise the value to avoid errors
+    // HJ, 1/Dec/2017
+    Field<Type>::operator=(pTraits<Type>::zero);
 }
 
 
diff --git a/src/immersedBoundary/immersedBoundaryTurbulence/wallFunctions/immersedBoundaryNutWallFunction/immersedBoundaryNutWallFunctionFvPatchScalarField.C b/src/immersedBoundary/immersedBoundaryTurbulence/wallFunctions/immersedBoundaryNutWallFunction/immersedBoundaryNutWallFunctionFvPatchScalarField.C
index f40fb15fe..b934e90c0 100644
--- a/src/immersedBoundary/immersedBoundaryTurbulence/wallFunctions/immersedBoundaryNutWallFunction/immersedBoundaryNutWallFunctionFvPatchScalarField.C
+++ b/src/immersedBoundary/immersedBoundaryTurbulence/wallFunctions/immersedBoundaryNutWallFunction/immersedBoundaryNutWallFunctionFvPatchScalarField.C
@@ -61,10 +61,23 @@ immersedBoundaryNutWallFunctionFvPatchScalarField
     const dictionary& dict
 )
 :
-    nutkWallFunctionFvPatchScalarField(p, iF, dict),
+    nutkWallFunctionFvPatchScalarField(p, iF),   // Do not read mixed data
     immersedBoundaryFieldBase<scalar>(p, true, 1e-6)
 {
     this->readPatchType(dict);
+
+    if (!isType<immersedBoundaryFvPatch>(p))
+    {
+        FatalIOErrorInFunction(dict)
+            << "\n    patch type '" << p.type()
+            << "' not constraint type '" << typeName << "'"
+            << "\n    for patch " << p.name()
+            << " of field " << this->dimensionedInternalField().name()
+            << " in file " << this->dimensionedInternalField().objectPath()
+            << exit(FatalIOError);
+    }
+
+    scalarField::operator=(this->patchInternalField());
 }
 
 
@@ -77,10 +90,28 @@ immersedBoundaryNutWallFunctionFvPatchScalarField
     const fvPatchFieldMapper& mapper
 )
 :
-    nutkWallFunctionFvPatchScalarField(ptf, p, iF, mapper),
+    nutkWallFunctionFvPatchScalarField(p, iF), // Do not map mixed data.  Set patchType later
     immersedBoundaryFieldBase<scalar>(p, true, 1e-6)
 {
+    // Note: NO MAPPING.  Fields are created on the immersed boundary
+    // HJ, 12/Apr/2012
+    if (!isType<immersedBoundaryFvPatch>(p))
+    {
+        FatalErrorInFunction
+            << "\n    patch type '" << p.type()
+            << "' not constraint type '" << typeName << "'"
+            << "\n    for patch " << p.name()
+            << " of field " << this->dimensionedInternalField().name()
+            << " in file " << this->dimensionedInternalField().objectPath()
+            << exit(FatalIOError);
+    }
+
     this->setPatchType(ptf);
+
+    // On creation of the mapped field, the internal field is dummy and
+    // cannot be used.  Initialise the value to avoid errors
+    // HJ, 1/Dec/2017
+    scalarField::operator=(scalar(0));
 }
 
 
diff --git a/src/immersedBoundary/immersedBoundaryTurbulence/wallFunctions/immersedBoundaryOmegaWallFunctions/immersedBoundaryOmegaWallFunctionFvPatchScalarField.C b/src/immersedBoundary/immersedBoundaryTurbulence/wallFunctions/immersedBoundaryOmegaWallFunctions/immersedBoundaryOmegaWallFunctionFvPatchScalarField.C
index e7de251ed..48953a408 100644
--- a/src/immersedBoundary/immersedBoundaryTurbulence/wallFunctions/immersedBoundaryOmegaWallFunctions/immersedBoundaryOmegaWallFunctionFvPatchScalarField.C
+++ b/src/immersedBoundary/immersedBoundaryTurbulence/wallFunctions/immersedBoundaryOmegaWallFunctions/immersedBoundaryOmegaWallFunctionFvPatchScalarField.C
@@ -60,7 +60,7 @@ immersedBoundaryOmegaWallFunctionFvPatchScalarField
     const dictionary& dict
 )
 :
-    omegaWallFunctionFvPatchScalarField(p, iF, dict),
+    omegaWallFunctionFvPatchScalarField(p, iF),    // Do not read mixed data
     immersedBoundaryFieldBase<scalar>
     (
         p,
@@ -70,7 +70,18 @@ immersedBoundaryOmegaWallFunctionFvPatchScalarField
 {
     this->readPatchType(dict);
 
-    *this == this->patchInternalField();
+    if (!isType<immersedBoundaryFvPatch>(p))
+    {
+        FatalIOErrorInFunction(dict)
+            << "\n    patch type '" << p.type()
+            << "' not constraint type '" << typeName << "'"
+            << "\n    for patch " << p.name()
+            << " of field " << this->dimensionedInternalField().name()
+            << " in file " << this->dimensionedInternalField().objectPath()
+            << exit(FatalIOError);
+    }
+
+    scalarField::operator=(this->patchInternalField());
 }
 
 
@@ -83,7 +94,7 @@ immersedBoundaryOmegaWallFunctionFvPatchScalarField
     const fvPatchFieldMapper& mapper
 )
 :
-    omegaWallFunctionFvPatchScalarField(ptf, p, iF, mapper),
+    omegaWallFunctionFvPatchScalarField(p, iF), // Do not map mixed data.  Set patchType later
     immersedBoundaryFieldBase<scalar>
     (
         p,
@@ -91,7 +102,25 @@ immersedBoundaryOmegaWallFunctionFvPatchScalarField
         ptf.deadValue()
     )
 {
+    // Note: NO MAPPING.  Fields are created on the immersed boundary
+    // HJ, 12/Apr/2012
+    if (!isType<immersedBoundaryFvPatch>(p))
+    {
+        FatalErrorInFunction
+            << "\n    patch type '" << p.type()
+            << "' not constraint type '" << typeName << "'"
+            << "\n    for patch " << p.name()
+            << " of field " << this->dimensionedInternalField().name()
+            << " in file " << this->dimensionedInternalField().objectPath()
+            << exit(FatalIOError);
+    }
+
     this->setPatchType(ptf);
+
+    // On creation of the mapped field, the internal field is dummy and
+    // cannot be used.  Initialise the value to avoid errors
+    // HJ, 1/Dec/2017
+    scalarField::operator=(SMALL);
 }