diff --git a/sw/source/ui/misc/glossary.cxx b/sw/source/ui/misc/glossary.cxx
index 16b8357b5d94..e477c6a60636 100644
--- a/sw/source/ui/misc/glossary.cxx
+++ b/sw/source/ui/misc/glossary.cxx
@@ -316,6 +316,7 @@ IMPL_LINK_TYPED( SwGlossaryDlg, GrpSelect, SvTreeListBox *, pBox, void )
         aReq.AppendItem(SfxStringItem(FN_SET_ACT_GLOSSARY, sTemp));
         aReq.Done();
     }
+    Invalidate(InvalidateFlags::Update);
 }
 
 void SwGlossaryDlg::Apply()
@@ -1014,6 +1015,12 @@ TriState SwGlTreeListBox::NotifyCopyingOrMoving(
     return TRISTATE_FALSE; // otherwise the entry is being set automatically
 }
 
+void SwGlTreeListBox::ExpandedHdl()
+{
+    Invalidate(InvalidateFlags::Update);
+    SvTreeListBox::ExpandedHdl();
+}
+
 OUString SwGlossaryDlg::GetCurrGrpName() const
 {
     SvTreeListEntry* pEntry = m_pCategoryBox->FirstSelected();
diff --git a/sw/source/uibase/inc/glossary.hxx b/sw/source/uibase/inc/glossary.hxx
index ccc9759274c7..2cd8d7b92d44 100644
--- a/sw/source/uibase/inc/glossary.hxx
+++ b/sw/source/uibase/inc/glossary.hxx
@@ -80,6 +80,8 @@ public:
     virtual void RequestHelp( const HelpEvent& rHEvt ) override;
     virtual Size GetOptimalSize() const override;
     void Clear();
+
+    virtual void ExpandedHdl() override;
 };
 
 class SwOneExampleFrame;