diff --git a/src/fvOptions/sources/derived/rotorDiskSource/rotorDiskSource.C b/src/fvOptions/sources/derived/rotorDiskSource/rotorDiskSource.C
index 9ce537b766..f37570ec7e 100644
--- a/src/fvOptions/sources/derived/rotorDiskSource/rotorDiskSource.C
+++ b/src/fvOptions/sources/derived/rotorDiskSource/rotorDiskSource.C
@@ -610,7 +610,7 @@ void Foam::fv::rotorDiskSource::addSup
     (
         IOobject
         (
-            "rotorForce",
+            name_ + ":rotorForce",
             mesh_.time().timeName(),
             mesh_,
             IOobject::NO_READ,