diff --git a/include/wx/generic/private/listctrl.h b/include/wx/generic/private/listctrl.h
index 0123cacc1d..f257fcd7a8 100644
--- a/include/wx/generic/private/listctrl.h
+++ b/include/wx/generic/private/listctrl.h
@@ -213,6 +213,21 @@ public:
         delete m_gi;
     }
 
+    // called by the owner when it toggles report view
+    void SetReportView(bool inReportView)
+    {
+        // we only need m_gi when we're not in report view so update as needed
+        if ( inReportView )
+        {
+            delete m_gi;
+            m_gi = NULL;
+        }
+        else
+        {
+            m_gi = new GeometryInfo;
+        }
+    }
+
     // are we in report mode?
     inline bool InReportView() const;
 
@@ -424,6 +439,10 @@ public:
 
     virtual ~wxListMainWindow();
 
+    // called by the main control when its mode changes
+    void SetReportView(bool inReportView);
+
+    // helper to simplify testing for wxLC_XXX flags
     bool HasFlag(int flag) const { return m_parent->HasFlag(flag); }
 
     // return true if this is a virtual list control
diff --git a/src/generic/listctrl.cpp b/src/generic/listctrl.cpp
index ae17c83a8a..732241fdf4 100644
--- a/src/generic/listctrl.cpp
+++ b/src/generic/listctrl.cpp
@@ -1650,6 +1650,15 @@ wxListMainWindow::~wxListMainWindow()
     delete m_renameTimer;
 }
 
+void wxListMainWindow::SetReportView(bool inReportView)
+{
+    const size_t count = m_lines.size();
+    for ( size_t n = 0; n < count; n++ )
+    {
+        m_lines[n].SetReportView(inReportView);
+    }
+}
+
 void wxListMainWindow::CacheLineData(size_t line)
 {
     wxGenericListCtrl *listctrl = GetListCtrl();
@@ -4443,12 +4452,22 @@ void wxGenericListCtrl::SetSingleStyle( long style, bool add )
 
 void wxGenericListCtrl::SetWindowStyleFlag( long flag )
 {
+    const bool wasInReportView = HasFlag(wxLC_REPORT);
+
     // update the window style first so that the header is created or destroyed
     // corresponding to the new style
     wxWindow::SetWindowStyleFlag( flag );
 
     if (m_mainWin)
     {
+        const bool inReportView = (flag & wxLC_REPORT) != 0;
+        if ( inReportView != wasInReportView )
+        {
+            // we need to notify the main window about this change as it must
+            // update its data structures
+            m_mainWin->SetReportView(inReportView);
+        }
+
         // m_mainWin->DeleteEverything();  wxMSW doesn't do that
 
         CreateOrDestroyHeaderWindowAsNeeded();