diff --git a/fix_build.patch b/fix_build.patch
new file mode 100644
index 0000000..92e9b68
--- /dev/null
+++ b/fix_build.patch
@@ -0,0 +1,33 @@
+From 70d241713ae375124eaabdd928fcdfd034822c6e Mon Sep 17 00:00:00 2001
+From: Cristian Maureira-Fredes <cristian.maureira-fredes@qt.io>
+Date: Wed, 29 Aug 2018 16:09:01 +0200
+Subject: shiboken/pep384: Avoid warning by literal comparison
+
+Even though we are certain of the comparison,
+better to get rid of the warnings.
+
+Change-Id: Iafa51b4c59c2315b24fc9092d18792f0c9297553
+Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
+Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
+---
+ sources/shiboken2/libshiboken/pep384impl.cpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+(limited to 'sources/shiboken2/libshiboken/pep384impl.cpp')
+
+diff --git a/sources/shiboken2/libshiboken/pep384impl.cpp b/sources/shiboken2/libshiboken/pep384impl.cpp
+index 25a3b625..4481f1cd 100644
+--- a/sources/shiboken2/libshiboken/pep384impl.cpp
++++ b/sources/shiboken2/libshiboken/pep384impl.cpp
+@@ -130,7 +130,7 @@ check_PyTypeObject_valid(void)
+     long probe_tp_dictoffset = PyLong_AsLong(d);
+     PyObject *probe_tp_mro = PyObject_GetAttrString(obtype, "__mro__");
+     if (false
+-        || probe_tp_name            != check->tp_name
++        || (probe_tp_name - check->tp_name) != 0 // to avoid warning
+         || probe_tp_basicsize       != check->tp_basicsize
+         || probe_tp_call            != check->tp_call
+         || probe_tp_str             != check->tp_str
+-- 
+cgit v1.2.1
+
diff --git a/python3-pyside2.changes b/python3-pyside2.changes
index 2b4b4eb..eaee995 100644
--- a/python3-pyside2.changes
+++ b/python3-pyside2.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Oct 23 20:29:53 UTC 2018 - Christophe Giboudeaux <christophe@krop.fr>
+
+- Add fix_build.patch to fix an error reported by the post build checks.
+
 -------------------------------------------------------------------
 Mon Oct 22 14:40:28 UTC 2018 - Adrian Schröter <adrian@suse.de>
 
diff --git a/python3-pyside2.spec b/python3-pyside2.spec
index dc99418..82980eb 100644
--- a/python3-pyside2.spec
+++ b/python3-pyside2.spec
@@ -32,6 +32,8 @@ Url:            http://wiki.qt.io/Qt_for_Python
 Source0:        pyside-setup-%{version}.tar.xz
 Patch1:         fix-cmake.patch
 Patch2:         lib64.patch
+# PATCH-FIX-UPSTREAM
+Patch3:         fix_build.patch
 BuildRequires:  cmake
 BuildRequires:  fdupes
 BuildRequires:  gcc-c++
@@ -109,6 +111,7 @@ for Qt.
 %if "%{_lib}" == "lib64"
 %patch2 -p1
 %endif
+%patch3 -p1
 
 %build
 export LLVM_INSTALL_DIR=/usr