diff --git a/databaseview.cpp b/databaseview.cpp
index 67efdaa..6bb9c4e 100644
--- a/databaseview.cpp
+++ b/databaseview.cpp
@@ -157,7 +157,7 @@ void FITSFileModel::prepareQuery()
     QString cols;
     QString join;
     QStringList where;
-    QString sql = "SELECT f.file,";
+    QString sql = m_columns.size() ? "SELECT f.file," : "SELECT f.file";
     for(int i=0; i<m_value.size(); i++)
     {
         if(m_key[i] == "file")