diff --git a/src/OpenFOAM/fields/DimensionedFields/DimensionedField/DimensionedField.C b/src/OpenFOAM/fields/DimensionedFields/DimensionedField/DimensionedField.C
index 16998a13f6..7f4be5496f 100644
--- a/src/OpenFOAM/fields/DimensionedFields/DimensionedField/DimensionedField.C
+++ b/src/OpenFOAM/fields/DimensionedFields/DimensionedField/DimensionedField.C
@@ -299,7 +299,7 @@ Foam::DimensionedField<Type, GeoMesh>::DimensionedField
     const DimensionedField<Type, GeoMesh>& df
 )
 :
-    regIOobject(newName, df, newName == df.name()),
+    regIOobject(newName, df, newName != df.name()),
     Field<Type>(df),
     mesh_(df.mesh_),
     dimensions_(df.dimensions_),