diff --git a/src/sampling/sampledSet/sampledSets/sampledSets.C b/src/sampling/sampledSet/sampledSets/sampledSets.C
index b5518732cb..43bdad2e23 100644
--- a/src/sampling/sampledSet/sampledSets/sampledSets.C
+++ b/src/sampling/sampledSet/sampledSets/sampledSets.C
@@ -102,7 +102,7 @@ bool Foam::sampledSets::checkFieldTypes()
     nFields += grep(symmTensorFields_, fieldTypes);
     nFields += grep(tensorFields_, fieldTypes);
 
-    if (Pstream::master)
+    if (Pstream::master())
     {
         if (debug)
         {