diff --git a/SOURCES/0001-scangobj-Make-G_MAXINT-appear-as-such-on-32-bit.patch b/SOURCES/0001-scangobj-Make-G_MAXINT-appear-as-such-on-32-bit.patch
new file mode 100644
index 0000000..a6ec72e
--- /dev/null
+++ b/SOURCES/0001-scangobj-Make-G_MAXINT-appear-as-such-on-32-bit.patch
@@ -0,0 +1,38 @@
+From 12f8e2014309403afc3bceabcea5e38b29fe5447 Mon Sep 17 00:00:00 2001
+From: Bastien Nocera <hadess@hadess.net>
+Date: Tue, 4 Sep 2018 09:50:15 +0200
+Subject: [PATCH] scangobj: Make G_MAXINT appear as such on 32-bit
+
+Don't overwrite the boundaries of integer properties when they match
+both G_MAXINT and G_MAXLONG. This also fixes a memory leak in the
+generated scanobj code.
+
+Closes: #49
+---
+ gtkdoc/scangobj.py | 10 ++++++----
+ 1 file changed, 6 insertions(+), 4 deletions(-)
+
+diff --git a/gtkdoc/scangobj.py b/gtkdoc/scangobj.py
+index 237863c..73c23b0 100644
+--- a/gtkdoc/scangobj.py
++++ b/gtkdoc/scangobj.py
+@@ -690,10 +690,12 @@ describe_unsigned_constant (gsize size, guint64 value)
+         else if (value == G_MAXUINT)
+           desc = g_strdup ("G_MAXUINT");
+       }
+-      if (value == (guint64)G_MAXLONG)
+-        desc = g_strdup ("G_MAXLONG");
+-      else if (value == G_MAXULONG)
+-        desc = g_strdup ("G_MAXULONG");
++      if (desc == NULL) {
++        if (value == (guint64)G_MAXLONG)
++          desc = g_strdup ("G_MAXLONG");
++        else if (value == G_MAXULONG)
++          desc = g_strdup ("G_MAXULONG");
++      }
+       break;
+     case 8:
+       if (value == G_MAXINT64)
+-- 
+2.29.2
+
diff --git a/SPECS/gtk-doc.spec b/SPECS/gtk-doc.spec
index 17cbc16..a5a439a 100644
--- a/SPECS/gtk-doc.spec
+++ b/SPECS/gtk-doc.spec
@@ -4,7 +4,7 @@
 
 Name: gtk-doc
 Version: 1.28
-Release: 2%{?dist}
+Release: 3%{?dist}
 Summary: API documentation generation tool for GTK+ and GNOME
 
 License: GPLv2+ and GFDL
@@ -15,6 +15,10 @@ Source0: http://download.gnome.org/sources/gtk-doc/1.28/gtk-doc-%{version}.tar.x
 # https://bugzilla.redhat.com/show_bug.cgi?id=1634770
 Patch0: 0001-Please-make-the-output-reproducible.patch
 
+# Backported from upstream
+# https://bugzilla.redhat.com/show_bug.cgi?id=1853142
+Patch1: 0001-scangobj-Make-G_MAXINT-appear-as-such-on-32-bit.patch
+
 BuildRequires: dblatex
 BuildRequires: docbook-utils
 BuildRequires: /usr/bin/xsltproc
@@ -65,6 +69,10 @@ make check || make check
 %{_libdir}/cmake/
 
 %changelog
+* Mon Feb 01 2021 Kalev Lember <klember@redhat.com> - 1.28-3
+- Backport an upstream patch to fix G_MAXINT appearing as G_MAXLONG on 32 bit
+- Related: #1853142
+
 * Mon Jul 20 2020 Kalev Lember <klember@redhat.com> - 1.28-2
 - Backport a patch to fix x86_64/i686 differences in generated documentation
 - Resolves: #1634770