diff --git a/dll/cpl/desk/general.c b/dll/cpl/desk/general.c
index e5891a02cf2..0266f04b1b5 100644
--- a/dll/cpl/desk/general.c
+++ b/dll/cpl/desk/general.c
@@ -150,6 +150,23 @@ AdvGeneralPageProc(HWND hwndDlg,
                 break;
             }
             break;
+        case WM_NOTIFY:
+        {
+            LPNMHDR lpnm = (LPNMHDR)lParam;
+            switch (lpnm->code)
+            {
+                case PSN_APPLY:
+                {
+                    HWND hFontSize = GetDlgItem(hwndDlg, IDC_FONTSIZE_COMBO);
+                    INT iItem = SendMessage(hFontSize, CB_GETCURSEL, 0, 0);
+                    INT Dpi = (INT)SendMessage(hFontSize, CB_GETITEMDATA, iItem, 0);
+                    UpdateUIfontsDueToDPIchange(Dpi, Dpi);
+                    //TODO: MessageBox
+                    break;
+                }
+            }
+            break;
+        }
     }
 
     return Ret;