diff --git a/0001-validate-support-SingleMainWindow-key-from-1.5.patch b/0001-validate-support-SingleMainWindow-key-from-1.5.patch
new file mode 100644
index 0000000..f494367
--- /dev/null
+++ b/0001-validate-support-SingleMainWindow-key-from-1.5.patch
@@ -0,0 +1,27 @@
+From 47ab968995ae864d3681833040e17b8f1af4cb38 Mon Sep 17 00:00:00 2001
+From: David King <amigadave@amigadave.com>
+Date: Tue, 15 Feb 2022 10:54:40 +0000
+Subject: [PATCH] validate: support SingleMainWindow key from 1.5
+
+Fixes https://gitlab.freedesktop.org/xdg/desktop-file-utils/-/issues/59
+---
+ src/validate.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/src/validate.c b/src/validate.c
+index 821be7d..10d1872 100644
+--- a/src/validate.c
++++ b/src/validate.c
+@@ -329,6 +329,9 @@ static DesktopKeyDefinition registered_desktop_keys[] = {
+   /* SuSE specific */
+   { DESKTOP_BOOLEAN_TYPE,      "X-SuSE-translate",  FALSE, FALSE, FALSE, NULL },
+ 
++  /* Since 1.5 */
++  { DESKTOP_BOOLEAN_TYPE,           "SingleMainWindow", FALSE, FALSE, FALSE, NULL },
++
+   /* Keys reserved for KDE */
+ 
+   /* since 0.9.4 */
+-- 
+2.36.1
+
diff --git a/0002-validate-Support-version-1.5.patch b/0002-validate-Support-version-1.5.patch
new file mode 100644
index 0000000..3ad84b1
--- /dev/null
+++ b/0002-validate-Support-version-1.5.patch
@@ -0,0 +1,55 @@
+From e1f28bc5673f6cb281f3f4bdd8d8264d8ced6253 Mon Sep 17 00:00:00 2001
+From: David King <amigadave@amigadave.com>
+Date: Tue, 15 Feb 2022 10:56:04 +0000
+Subject: [PATCH] validate: Support version 1.5
+
+Bump CURRENT_SPEC_VERSION to 1.5.
+---
+ man/desktop-file-validate.1 | 2 +-
+ src/validate.c              | 3 +++
+ src/validate.h              | 2 +-
+ 3 files changed, 5 insertions(+), 2 deletions(-)
+
+diff --git a/man/desktop-file-validate.1 b/man/desktop-file-validate.1
+index 8e17411..ce87c47 100644
+--- a/man/desktop-file-validate.1
++++ b/man/desktop-file-validate.1
+@@ -9,7 +9,7 @@ desktop-file-validate \- Validate desktop entry files
+ .B desktop-file-validate [\-\-no-hints] [\-\-no-warn-deprecated] [\-\-warn-kde] FILE...
+ .SH DESCRIPTION
+ The \fIdesktop-file-validate\fP program is a tool to validate desktop
+-entry files according to the Desktop Entry specification 1.4.
++entry files according to the Desktop Entry specification 1.5.
+ .PP
+ The specification describes a file format to provide information such as
+ name, icon and description for an application. Such a file can then be
+diff --git a/src/validate.c b/src/validate.c
+index 10d1872..87f196e 100644
+--- a/src/validate.c
++++ b/src/validate.c
+@@ -964,6 +964,9 @@ handle_version_key (kf_validator *kf,
+                     const char   *locale_key,
+                     const char   *value)
+ {
++  if (!strcmp (value, "1.5"))
++    return TRUE;
++
+   if (!strcmp (value, "1.4"))
+     return TRUE;
+ 
+diff --git a/src/validate.h b/src/validate.h
+index e6efd93..a7952cd 100644
+--- a/src/validate.h
++++ b/src/validate.h
+@@ -30,7 +30,7 @@
+ 
+ #include <glib.h>
+ 
+-#define CURRENT_SPEC_VERSION "1.4"
++#define CURRENT_SPEC_VERSION "1.5"
+ 
+ #define GROUP_KDE_DESKTOP_ENTRY "KDE Desktop Entry"
+ #define GROUP_DESKTOP_ACTION "Desktop Action "
+-- 
+2.36.1
+
diff --git a/desktop-file-utils.changes b/desktop-file-utils.changes
index 74ddc0c..328d978 100644
--- a/desktop-file-utils.changes
+++ b/desktop-file-utils.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Fri Jun 24 07:32:30 UTC 2022 - Christophe Giboudeaux <christophe@krop.fr>
+
+- Add patches to avoid bogus errors in post-build checks:
+  * 0001-validate-support-SingleMainWindow-key-from-1.5.patch
+  * 0002-validate-Support-version-1.5.patch
+
 -------------------------------------------------------------------
 Fri Mar 25 14:02:47 UTC 2022 - Callum Farmer <gmbr3@opensuse.org>
 
diff --git a/desktop-file-utils.spec b/desktop-file-utils.spec
index efc0ab7..a09a9a4 100644
--- a/desktop-file-utils.spec
+++ b/desktop-file-utils.spec
@@ -31,6 +31,9 @@ Source3:        install_man.py
 Patch0:         desktop-file-utils-suse-keys.patch
 # PATCH-FIX-OPENSUSE install_man_desktop-file-edit_as_symlink.patch -- With Source3 makes manual page "desktop-file-edit.1" a symlink instead of a copy.
 Patch1:         install_man_desktop-file-edit_as_symlink.patch
+# PATCH-FIX-UPSTREAM -- SingleMainWindow is present in xdg-specs 1.5 and can be used by both GNOME and KDE
+Patch2:         0001-validate-support-SingleMainWindow-key-from-1.5.patch
+Patch3:         0002-validate-Support-version-1.5.patch
 BuildRequires:  glib2-devel
 BuildRequires:  meson >= 0.49.0
 BuildRequires:  pkgconfig