diff --git a/sdk/include/reactos/cicero/cicarray.h b/sdk/include/reactos/cicero/cicarray.h
index 880188b5186..1d2142f1c59 100644
--- a/sdk/include/reactos/cicero/cicarray.h
+++ b/sdk/include/reactos/cicero/cicarray.h
@@ -57,6 +57,15 @@ public:
     using CicArrayBase::Insert;
     using CicArrayBase::Remove;
 
+    BOOL Add(const T_ITEM& item)
+    {
+        T_ITEM *pItem = Append(1);
+        if (!pItem)
+            return FALSE;
+        CopyMemory(pItem, &item, sizeof(T_ITEM));
+        return TRUE;
+    }
+
     ssize_t Find(const T_ITEM& item) const
     {
         for (size_t iItem = 0; iItem < m_cItems; ++iItem)
diff --git a/sdk/include/reactos/cicero/cicuif.h b/sdk/include/reactos/cicero/cicuif.h
index c1e2f337027..b4715f93263 100644
--- a/sdk/include/reactos/cicero/cicuif.h
+++ b/sdk/include/reactos/cicero/cicuif.h
@@ -34,6 +34,7 @@ class CUIFTheme;
         class CUIFWndFrame;
         class CUIFGripper;
         class CUIFMenuItem;
+            class CUIFMenuItemSeparator;
 class CUIFObjectArray;
 class CUIFColorTable;
     class CUIFColorTableSys;
@@ -806,13 +807,25 @@ public:
     STDMETHOD_(void, OnTimer)() override;
 
     STDMETHOD_(void, InitMenuExtent)();
-    STDMETHOD_(void, OnPaintO10)(HDC hDC);
     STDMETHOD_(void, OnPaintDef)(HDC hDC);
+    STDMETHOD_(void, OnPaintO10)(HDC hDC);
     STDMETHOD_(void, OnUnknownMethod)() { } // FIXME: method name
 };
 
 /////////////////////////////////////////////////////////////////////////////
 
+class CUIFMenuItemSeparator : public CUIFMenuItem
+{
+public:
+    CUIFMenuItemSeparator(CUIFMenu *pMenu);
+
+    STDMETHOD_(void, InitMenuExtent)() override;
+    STDMETHOD_(void, OnPaintDef)(HDC hDC) override;
+    STDMETHOD_(void, OnPaintO10)(HDC hDC) override;
+};
+
+/////////////////////////////////////////////////////////////////////////////
+
 // m_style flags for CUIFButton
 enum
 {
@@ -5733,20 +5746,27 @@ CUIFMenu::InitShow(CUIFWindow *pWindow, LPCRECT prc, BOOL bFlag, BOOL bDoAnimati
 
 inline BOOL CUIFMenu::InsertItem(CUIFMenuItem *pItem)
 {
-    CUIFMenuItem **ppAdded = m_MenuItems.Append(1);
-    if (!ppAdded)
+    if (!m_MenuItems.Add(pItem))
         return FALSE;
 
-    *ppAdded = pItem;
     pItem->SetFont(m_hFont);
     return TRUE;
 }
 
-/// @unimplemented
 inline BOOL CUIFMenu::InsertSeparator()
 {
-    //FIXME
-    return FALSE;
+    CUIFMenuItemSeparator *pSep = new(cicNoThrow) CUIFMenuItemSeparator(this);
+    if (!pSep)
+        return FALSE;
+
+    if (!m_MenuItems.Add(pSep))
+    {
+        delete pSep;
+        return FALSE;
+    }
+
+    pSep->Initialize();
+    return TRUE;
 }
 
 inline STDMETHODIMP_(void)
@@ -6370,3 +6390,39 @@ inline void CUIFMenuItem::ShowSubPopup()
     ::ClientToScreen(*m_pWindow, (LPPOINT)&rc.right);
     m_pSubMenu->ShowSubPopup(m_pMenu, &rc, FALSE);
 }
+
+/////////////////////////////////////////////////////////////////////////////
+
+inline
+CUIFMenuItemSeparator::CUIFMenuItemSeparator(CUIFMenu *pMenu) : CUIFMenuItem(pMenu, TRUE)
+{
+    m_nMenuItemID = -1;
+}
+
+inline STDMETHODIMP_(void)
+CUIFMenuItemSeparator::InitMenuExtent()
+{
+    m_MenuLeftExtent.cx = 0;
+    m_MenuLeftExtent.cy = 6;
+}
+
+inline STDMETHODIMP_(void)
+CUIFMenuItemSeparator::OnPaintDef(HDC hDC)
+{
+    if (!m_pScheme)
+        return;
+
+    RECT rc;
+    rc.left   = m_rc.left + 2;
+    rc.top    = m_rc.top + (m_rc.bottom - m_rc.top - 2) / 2;
+    rc.right  = m_rc.right - 2;
+    rc.bottom = rc.top + 2;
+    m_pScheme->DrawMenuSeparator(hDC, &rc);
+}
+
+/// @unimplemented
+inline STDMETHODIMP_(void)
+CUIFMenuItemSeparator::OnPaintO10(HDC hDC)
+{
+    //FIXME
+}