diff --git a/src/postProcessing/functionObjects/field/fieldMinMax/fieldMinMax.C b/src/postProcessing/functionObjects/field/fieldMinMax/fieldMinMax.C
index 7c3c3283895ea0012c7c1efa514d2ee13e528216..fde8dc539891673a728ab8787c1f0dc87449657d 100644
--- a/src/postProcessing/functionObjects/field/fieldMinMax/fieldMinMax.C
+++ b/src/postProcessing/functionObjects/field/fieldMinMax/fieldMinMax.C
@@ -76,7 +76,12 @@ Foam::fieldMinMax::fieldMinMax
         WarningIn
         (
             "fieldMinMax::fieldMinMax"
-            "(const objectRegistry& obr, const dictionary& dict)"
+            "("
+                "const word&, "
+                "const objectRegistry&, "
+                "const dictionary&, "
+                "const bool"
+            ")"
         )   << "No fvMesh available, deactivating."
             << endl;
     }