diff --git a/rtgui/batchqueue.cc b/rtgui/batchqueue.cc
index da042347d..3d773d874 100644
--- a/rtgui/batchqueue.cc
+++ b/rtgui/batchqueue.cc
@@ -743,8 +743,14 @@ Glib::ustring BatchQueue::calcAutoFileNameBase (const Glib::ustring& origFileNam
         da.push_back (tok);
     }
 
-    if (origFileName[0] == '/' || origFileName[0] == '\\') {
+    if (origFileName[0] == '/') {
         pa.push_back ("/" + da[0]);
+    } else if (origFileName[0] == '\\') {
+        if (origFileName.size() > 1 && origFileName[1] == '\\') {
+            pa.push_back ("\\\\" + da[0]);
+        } else {
+            pa.push_back ("/" + da[0]);
+        }
     } else {
         pa.push_back (da[0]);
     }