From cb72bd17fc4b529f2fd6f7bc32aa1b35a74b2888 Mon Sep 17 00:00:00 2001
From: Leonardo Campos <leonardoscampos@gmail.com>
Date: Fri, 27 Jan 2017 02:32:23 -0200
Subject: [PATCH] minor change on log message

---
 .../ohif-viewerbase/client/lib/classes/StudyPrefetcher.js    | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

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 [];
         }