diff --git a/src/sampling/sampledSet/patchCloud/patchCloudSet.C b/src/sampling/sampledSet/patchCloud/patchCloudSet.C
index 91bf7becb1..2d2317a087 100644
--- a/src/sampling/sampledSet/patchCloud/patchCloudSet.C
+++ b/src/sampling/sampledSet/patchCloud/patchCloudSet.C
@@ -114,6 +114,8 @@ void Foam::patchCloudSet::calcSamples
         10,             // leafsize
         3.0             // duplicity
     );
+
+    // Force calculation of face-diagonal decomposition
     (void)mesh().tetBasePtIs();