diff --git a/src/immersedBoundary/immersedBoundary/immersedBoundaryFvPatchField/immersedBoundaryFvPatchField.C b/src/immersedBoundary/immersedBoundary/immersedBoundaryFvPatchField/immersedBoundaryFvPatchField.C
index 2b61988be..ca0f85a14 100644
--- a/src/immersedBoundary/immersedBoundary/immersedBoundaryFvPatchField/immersedBoundaryFvPatchField.C
+++ b/src/immersedBoundary/immersedBoundary/immersedBoundaryFvPatchField/immersedBoundaryFvPatchField.C
@@ -166,8 +166,8 @@ void immersedBoundaryFvPatchField<Type>::rmap
     const labelList&
 )
 {
-    // Use internal values
-    Field<Type>::operator=(this->patchInternalField());
+    // Base fields do not rmap
+    this->setSize(this->patch().size(), pTraits<Type>::zero);
 }
 
 
diff --git a/src/immersedBoundary/immersedBoundary/immersedBoundaryFvsPatchField/immersedBoundaryFvsPatchField.C b/src/immersedBoundary/immersedBoundary/immersedBoundaryFvsPatchField/immersedBoundaryFvsPatchField.C
index 13dfe77f4..f7eba54f2 100644
--- a/src/immersedBoundary/immersedBoundary/immersedBoundaryFvsPatchField/immersedBoundaryFvsPatchField.C
+++ b/src/immersedBoundary/immersedBoundary/immersedBoundaryFvsPatchField/immersedBoundaryFvsPatchField.C
@@ -66,9 +66,11 @@ immersedBoundaryFvsPatchField<Type>::immersedBoundaryFvsPatchField
     const dictionary& dict
 )
 :
-    fvsPatchField<Type>(p, iF, dict),
+    fvsPatchField<Type>(p, iF),   // Do not read base data
     ibPatch_(refCast<const immersedBoundaryFvPatch>(p))
-{}
+{
+    operator=(pTraits<Type>::zero);
+}
 
 
 template<class Type>
@@ -80,7 +82,7 @@ immersedBoundaryFvsPatchField<Type>::immersedBoundaryFvsPatchField
     const fvPatchFieldMapper& mapper
 )
 :
-    fvsPatchField<Type>(ptf, p, iF, mapper),
+    fvsPatchField<Type>(p, iF),  // Do not map base data
     ibPatch_(refCast<const immersedBoundaryFvPatch>(p))
 {}
 
@@ -153,7 +155,9 @@ template<class Type>
 void immersedBoundaryFvsPatchField<Type>::write(Ostream& os) const
 {
     fvsPatchField<Type>::write(os);
-    this->writeEntry("value", os);
+    // The value entry needs to be written with zero size
+    Field<Type>::null().writeEntry("value", os);
+    // this->writeEntry("value", os);
 }