diff --git a/src/OpenFOAM/db/objectRegistry/objectRegistry.H b/src/OpenFOAM/db/objectRegistry/objectRegistry.H
index d05f5edf0a..0fe73249ee 100644
--- a/src/OpenFOAM/db/objectRegistry/objectRegistry.H
+++ b/src/OpenFOAM/db/objectRegistry/objectRegistry.H
@@ -161,6 +161,12 @@ public:
 
     // Access
 
+        //- Return the object registry
+        const objectRegistry& thisDb() const
+        {
+            return *this;
+        }
+
         //- Return time
         const Time& time() const
         {