diff --git a/Packages/ohif-viewerbase/client/lib/classes/StudyPrefetcher.js b/Packages/ohif-viewerbase/client/lib/classes/StudyPrefetcher.js
index 7d04593e7..e6da733be 100644
--- a/Packages/ohif-viewerbase/client/lib/classes/StudyPrefetcher.js
+++ b/Packages/ohif-viewerbase/client/lib/classes/StudyPrefetcher.js
@@ -206,7 +206,10 @@ export class StudyPrefetcher {
         const getDisplaySets = this[methodName];
 
         if (!getDisplaySets) {
-            OHIF.log.warn(`Invalid prefetch order configuration (${prefetchOrder})`);
+            if (prefetchOrder) {
+                OHIF.log.warn(`Invalid prefetch order configuration (${prefetchOrder})`);
+            }
+
             return [];
         }