diff --git a/beamtime/nappFileList.m b/beamtime/nappFileList.m
index 144ee1f..fa52d82 100755
--- a/beamtime/nappFileList.m
+++ b/beamtime/nappFileList.m
@@ -1431,7 +1431,8 @@ if istable(p.Results.DataTable) % do this only if previous list was input to fun
 
 
     % merge tables (append imported data to previous table)
-    ListFiles = [p.Results.DataTable; ListFiles];
+    % ListFiles = [p.Results.DataTable; ListFiles];
+    ListFiles = outerjoinRowToTable(p.Results.DataTable, ListFiles);
     % Then, we sort the table based on the time (datenum)
     ListFiles = sortrows(ListFiles,'lastModifiedDatenum');
 end