diff --git a/applications/utilities/mesh/generation/snappyHexMesh/snappyHexMesh.C b/applications/utilities/mesh/generation/snappyHexMesh/snappyHexMesh.C
index 6f086523dd..9a0825ac91 100644
--- a/applications/utilities/mesh/generation/snappyHexMesh/snappyHexMesh.C
+++ b/applications/utilities/mesh/generation/snappyHexMesh/snappyHexMesh.C
@@ -203,8 +203,8 @@ int main(int argc, char *argv[])
         IOobject
         (
             "abc",                      // dummy name
-            //mesh.time().constant(),     // instance
-            mesh.time().findInstance("triSurface", word::null),// instance
+            mesh.time().constant(),     // instance
+            //mesh.time().findInstance("triSurface", word::null),// instance
             "triSurface",               // local
             mesh.time(),                // registry
             IOobject::MUST_READ,
diff --git a/src/autoMesh/autoHexMesh/autoHexMeshDriver/autoHexMeshDriver.C b/src/autoMesh/autoHexMesh/autoHexMeshDriver/autoHexMeshDriver.C
index 3c2221f8d0..1612a23dea 100644
--- a/src/autoMesh/autoHexMesh/autoHexMeshDriver/autoHexMeshDriver.C
+++ b/src/autoMesh/autoHexMesh/autoHexMeshDriver/autoHexMeshDriver.C
@@ -225,7 +225,9 @@ Foam::autoHexMeshDriver::autoHexMeshDriver
                 IOobject
                 (
                     "abc",                                      // dummy name
-                    mesh_.time().findInstance("triSurface", word::null),// inst
+                    //mesh_.time().findInstance("triSurface", word::null),
+                                                                // instance
+                    mesh_.time().constant(),                    // instance
                     "triSurface",                               // local
                     mesh_.time(),                               // registry
                     IOobject::MUST_READ,
diff --git a/src/autoMesh/autoHexMesh/autoHexMeshDriver/autoRefineDriver.C b/src/autoMesh/autoHexMesh/autoHexMeshDriver/autoRefineDriver.C
index 0ac24a5574..a9b31b9bd1 100644
--- a/src/autoMesh/autoHexMesh/autoHexMeshDriver/autoRefineDriver.C
+++ b/src/autoMesh/autoHexMesh/autoHexMeshDriver/autoRefineDriver.C
@@ -78,8 +78,9 @@ Foam::label Foam::autoRefineDriver::readFeatureEdges
                 IOobject
                 (
                     featFileName,                       // name
-                    mesh.time().findInstance("triSurface", featFileName),
-                                                        // instance
+                    //mesh.time().findInstance("triSurface", featFileName),
+                    //                                    // instance
+                    mesh.time().constant(),             // instance
                     "triSurface",                       // local
                     mesh.time(),                        // registry
                     IOobject::MUST_READ,