diff --git a/src/qtgui/rclmain_w.cpp b/src/qtgui/rclmain_w.cpp
index c8311a0f..4fedc28c 100644
--- a/src/qtgui/rclmain_w.cpp
+++ b/src/qtgui/rclmain_w.cpp
@@ -1626,7 +1626,8 @@ void RclMain::showDocHistory()
 	new DocSequenceHistory(rcldb, g_dynconf, 
 			       string(tr("Document history").toUtf8()));
     src->setDescription((const char *)tr("History data").toUtf8());
-    m_source = RefCntr<DocSequence>(src);
+    DocSource *source = new DocSource(RefCntr<DocSequence>(src));
+    m_source = RefCntr<DocSequence>(source);
     m_source->setSortSpec(m_sortspec);
     m_source->setFiltSpec(m_filtspec);
     emit docSourceChanged(m_source);
diff --git a/src/qtgui/reslist.cpp b/src/qtgui/reslist.cpp
index 09d9357e..dd3ba140 100644
--- a/src/qtgui/reslist.cpp
+++ b/src/qtgui/reslist.cpp
@@ -318,7 +318,8 @@ void ResList::setDocSource(RefCntr<DocSequence> nsource)
     m_source = RefCntr<DocSequence>(new DocSource(nsource));
 }
 
-// Reapply parameters. Sort params probably changed
+// A query was executed, or the filtering/sorting parameters changed,
+// re-read the results.
 void ResList::readDocSource()
 {
     LOGDEB(("ResList::readDocSource()\n"));