diff --git a/patches/ntdll-NtUnmapViewOfSection/0001-ntdll-Don-t-fail-in-NtUnmapViewOfSection-when-trying.patch b/patches/ntdll-NtUnmapViewOfSection/0001-ntdll-Don-t-fail-in-NtUnmapViewOfSection-when-trying.patch
new file mode 100644
index 00000000..a3f44d5a
--- /dev/null
+++ b/patches/ntdll-NtUnmapViewOfSection/0001-ntdll-Don-t-fail-in-NtUnmapViewOfSection-when-trying.patch
@@ -0,0 +1,45 @@
+From 3748f23616bf25fb2f599f7896d8437614918ce0 Mon Sep 17 00:00:00 2001
+From: Sebastian Lackner <sebastian@fds-team.de>
+Date: Mon, 9 Oct 2017 14:18:30 +0200
+Subject: ntdll: Don't fail in NtUnmapViewOfSection when trying to unmap
+ builtin view.
+
+Fixes a regression introduced in a557934c76c0e0bed6b73e5c8f79a0df059ff2de.
+---
+ dlls/ntdll/virtual.c | 18 +++++++++++++-----
+ 1 file changed, 13 insertions(+), 5 deletions(-)
+
+diff --git a/dlls/ntdll/virtual.c b/dlls/ntdll/virtual.c
+index f33579840a2..04862237bb9 100644
+--- a/dlls/ntdll/virtual.c
++++ b/dlls/ntdll/virtual.c
+@@ -3071,13 +3071,21 @@ NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
+     server_enter_uninterrupted_section( &csVirtual, &sigset );
+     if ((view = VIRTUAL_FindView( addr, 0 )) && !is_view_valloc( view ))
+     {
+-        SERVER_START_REQ( unmap_view )
++        if (view->protect & VPROT_SYSTEM)
+         {
+-            req->base = wine_server_client_ptr( view->base );
+-            status = wine_server_call( req );
++            delete_view( view );
++            status = STATUS_SUCCESS;
++        }
++        else
++        {
++            SERVER_START_REQ( unmap_view )
++            {
++                req->base = wine_server_client_ptr( view->base );
++                status = wine_server_call( req );
++            }
++            SERVER_END_REQ;
++            if (!status) delete_view( view );
+         }
+-        SERVER_END_REQ;
+-        if (!status) delete_view( view );
+     }
+     server_leave_uninterrupted_section( &csVirtual, &sigset );
+     return status;
+-- 
+2.14.1
+
diff --git a/patches/ntdll-NtUnmapViewOfSection/definition b/patches/ntdll-NtUnmapViewOfSection/definition
new file mode 100644
index 00000000..b5b7e126
--- /dev/null
+++ b/patches/ntdll-NtUnmapViewOfSection/definition
@@ -0,0 +1 @@
+Fixes: [43860] Don't fail in NtUnmapViewOfSection when trying to unmap builtin view
diff --git a/patches/patchinstall.sh b/patches/patchinstall.sh
index 77d52d5c..c75d9d23 100755
--- a/patches/patchinstall.sh
+++ b/patches/patchinstall.sh
@@ -273,6 +273,7 @@ patch_enable_all ()
 	enable_ntdll_NtSetInformationToken="$1"
 	enable_ntdll_NtSetLdtEntries="$1"
 	enable_ntdll_NtSuspendProcess="$1"
+	enable_ntdll_NtUnmapViewOfSection="$1"
 	enable_ntdll_Pipe_SpecialCharacters="$1"
 	enable_ntdll_ProcessImageFileNameWin32="$1"
 	enable_ntdll_ProcessPriorityClass="$1"
@@ -1102,6 +1103,9 @@ patch_enable ()
 		ntdll-NtSuspendProcess)
 			enable_ntdll_NtSuspendProcess="$2"
 			;;
+		ntdll-NtUnmapViewOfSection)
+			enable_ntdll_NtUnmapViewOfSection="$2"
+			;;
 		ntdll-Pipe_SpecialCharacters)
 			enable_ntdll_Pipe_SpecialCharacters="$2"
 			;;
@@ -6816,6 +6820,21 @@ if test "$enable_ntdll_NtSuspendProcess" -eq 1; then
 	) >> "$patchlist"
 fi
 
+# Patchset ntdll-NtUnmapViewOfSection
+# |
+# | This patchset fixes the following Wine bugs:
+# |   *	[#43860] Don't fail in NtUnmapViewOfSection when trying to unmap builtin view
+# |
+# | Modified files:
+# |   *	dlls/ntdll/virtual.c
+# |
+if test "$enable_ntdll_NtUnmapViewOfSection" -eq 1; then
+	patch_apply ntdll-NtUnmapViewOfSection/0001-ntdll-Don-t-fail-in-NtUnmapViewOfSection-when-trying.patch
+	(
+		printf '%s\n' '+    { "Sebastian Lackner", "ntdll: Don'\''t fail in NtUnmapViewOfSection when trying to unmap builtin view.", 1 },';
+	) >> "$patchlist"
+fi
+
 # Patchset ntdll-ProcessImageFileNameWin32
 # |
 # | Modified files: