diff --git a/patches/user32-dialog_focus/0001-user32-Dont-reset-focus-if-current-control-is-a-chil.patch b/patches/user32-dialog_focus/0001-user32-Dont-reset-focus-if-current-control-is-a-chil.patch
new file mode 100644
index 000000000..3c10839e7
--- /dev/null
+++ b/patches/user32-dialog_focus/0001-user32-Dont-reset-focus-if-current-control-is-a-chil.patch
@@ -0,0 +1,35 @@
+From 1e118030e5b1da7bbfa4c03548b15beb137497f5 Mon Sep 17 00:00:00 2001
+From: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>
+Date: Thu, 6 Dec 2018 15:01:54 +1100
+Subject: [PATCH] user32: Dont reset focus if current control is a child of our
+ parent
+
+---
+ dlls/user32/dialog.c | 11 ++++++++++-
+ 1 file changed, 10 insertions(+), 1 deletion(-)
+
+diff --git a/dlls/user32/dialog.c b/dlls/user32/dialog.c
+index 0b33a57..0d98d0a 100644
+--- a/dlls/user32/dialog.c
++++ b/dlls/user32/dialog.c
+@@ -692,7 +692,16 @@ static HWND DIALOG_CreateIndirect( HINSTANCE hInst, LPCVOID dlgTemplate,
+                     SetFocus( focus );
+                 }
+                 else
+-                    SetFocus( hwnd );
++                {
++                    if (template.style & WS_CHILD)
++                    {
++                        HWND hParent = GetParent(hwnd);
++                        if (!IsChild(hParent, GetFocus()))
++                            SetFocus( hwnd );
++                    }
++                    else
++                        SetFocus( hwnd );
++                }
+             }
+         }
+ 
+-- 
+1.9.1
+
diff --git a/patches/user32-dialog_focus/definition b/patches/user32-dialog_focus/definition
new file mode 100644
index 000000000..bcc5b5279
--- /dev/null
+++ b/patches/user32-dialog_focus/definition
@@ -0,0 +1 @@
+Fixes: [46215] File Open Dialog fails to set focus to Filename text box
\ No newline at end of file