diff --git a/patches/user32-ListBox_Size/0001-user32-Fix-calculation-of-listbox-size-when-horizont.patch b/patches/user32-ListBox_Size/0001-user32-Fix-calculation-of-listbox-size-when-horizont.patch
new file mode 100644
index 00000000..c33c7ce3
--- /dev/null
+++ b/patches/user32-ListBox_Size/0001-user32-Fix-calculation-of-listbox-size-when-horizont.patch
@@ -0,0 +1,33 @@
+From 0e6de4c3b7e4250772de4e350b03818e5edb04e4 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Michael=20M=C3=BCller?= <michael@fds-team.de>
+Date: Sun, 27 Sep 2015 03:30:43 +0200
+Subject: user32: Fix calculation of listbox size when horizontal scrollbar is
+ present.
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: Michael Müller <michael@fds-team.de>
+---
+ dlls/user32/listbox.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/dlls/user32/listbox.c b/dlls/user32/listbox.c
+index 2902ac9..c9ef17d 100644
+--- a/dlls/user32/listbox.c
++++ b/dlls/user32/listbox.c
+@@ -356,8 +356,11 @@ static void LISTBOX_UpdatePage( LB_DESCR *descr )
+ static void LISTBOX_UpdateSize( LB_DESCR *descr )
+ {
+     RECT rect;
++    LONG style = GetWindowLongW( descr->self, GWL_STYLE );
+ 
+     GetClientRect( descr->self, &rect );
++    if (style & WS_HSCROLL)
++        rect.bottom += GetSystemMetrics(SM_CYHSCROLL);
+     descr->width  = rect.right - rect.left;
+     descr->height = rect.bottom - rect.top;
+     if (!(descr->style & LBS_NOINTEGRALHEIGHT) && !(descr->style & LBS_OWNERDRAWVARIABLE))
+-- 
+2.5.1
+