diff --git a/lib/rest/utils.js b/lib/rest/utils.js
index 49996bb..f58c3da 100644
--- a/lib/rest/utils.js
+++ b/lib/rest/utils.js
@@ -246,7 +246,7 @@ export function validRange(paramName, paramValue, mandatory = false, lowerBound
     return true;
   }
 
-  if(!expectedType(paramName, Number, paramValue)){
+  if(!expectedType(paramName, [Number], paramValue)){
     throw new InvalidRequestError(paramName + ": Expected an Integer but received " + paramValue.constructor + " instead")
   }