diff --git a/src/server/sparql/Mappers.js b/src/server/sparql/Mappers.js
index 5b1405e3be6aeefb2433d1c33748997ad0a15280..fa85bf429aacd5578089153b5accfbd328e25420 100644
--- a/src/server/sparql/Mappers.js
+++ b/src/server/sparql/Mappers.js
@@ -180,6 +180,7 @@ export const linearScale = ({ data, config }) => {
       item[`${variable}Scaled`] = (maxAllowed - minAllowed) * (unscaledNum - min) / (max - min) + minAllowed
     }
   })
+  return data
 }
 
 /* Data processing as in: