diff --git a/src/functionObjects/field/fieldValues/surfaceFieldValue/surfaceFieldValueTemplates.C b/src/functionObjects/field/fieldValues/surfaceFieldValue/surfaceFieldValueTemplates.C
index 1300e6e8b8..38ddd5ba91 100644
--- a/src/functionObjects/field/fieldValues/surfaceFieldValue/surfaceFieldValueTemplates.C
+++ b/src/functionObjects/field/fieldValues/surfaceFieldValue/surfaceFieldValueTemplates.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2011-2018 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2019 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -197,7 +197,7 @@ processSameTypeValues
         {
             if (weightField.size())
             {
-                result = sum(weightField*values)/sum(weightField);
+                result = sum(weightField*values)/max(sum(weightField), vSmall);
             }
             else
             {
@@ -218,7 +218,9 @@ processSameTypeValues
 
             if (weightField.size())
             {
-                result = sum(weightField*magSf*values)/sum(magSf*weightField);
+                result =
+                    sum(weightField*magSf*values)
+                   /max(sum(magSf*weightField), vSmall);
             }
             else
             {
diff --git a/src/functionObjects/field/fieldValues/volFieldValue/volFieldValueTemplates.C b/src/functionObjects/field/fieldValues/volFieldValue/volFieldValueTemplates.C
index 2bc002309a..5e3658243f 100644
--- a/src/functionObjects/field/fieldValues/volFieldValue/volFieldValueTemplates.C
+++ b/src/functionObjects/field/fieldValues/volFieldValue/volFieldValueTemplates.C
@@ -104,7 +104,7 @@ Type Foam::functionObjects::fieldValues::volFieldValue::processValues
         }
         case operationType::weightedAverage:
         {
-            result = gSum(weightField*values)/gSum(weightField);
+            result = gSum(weightField*values)/max(gSum(weightField), vSmall);
             break;
         }
         case operationType::volAverage:
@@ -114,7 +114,8 @@ Type Foam::functionObjects::fieldValues::volFieldValue::processValues
         }
         case operationType::weightedVolAverage:
         {
-            result = gSum(weightField*V*values)/gSum(weightField*V);
+            result =
+                gSum(weightField*V*values)/max(gSum(weightField*V), vSmall);
             break;
         }
         case operationType::volIntegrate: