diff --git a/applications/utilities/postProcessing/miscellaneous/postChannel/channelIndexTemplates.C b/applications/utilities/postProcessing/miscellaneous/postChannel/channelIndexTemplates.C
index 9fc8ff0360..6f7e548c70 100644
--- a/applications/utilities/postProcessing/miscellaneous/postChannel/channelIndexTemplates.C
+++ b/applications/utilities/postProcessing/miscellaneous/postChannel/channelIndexTemplates.C
@@ -54,9 +54,11 @@ Foam::Field<T> Foam::channelIndex::collapse
 ) const
 {
     // Average and order
+    const Field<T> summedField(regionSum(cellField));
+
     Field<T> regionField
     (
-        regionSum(cellField)
+        summedField
       / regionCount_,
         sortMap_
     );