diff --git a/Correctly-show-mem-size-over-4GiB-on-32bit.patch b/Correctly-show-mem-size-over-4GiB-on-32bit.patch
new file mode 100644
index 0000000..c7352ab
--- /dev/null
+++ b/Correctly-show-mem-size-over-4GiB-on-32bit.patch
@@ -0,0 +1,29 @@
+From 10d60170eaa46c3e4233c4eef966418d0065754d Mon Sep 17 00:00:00 2001
+From: Christoph Feck <cfeck@kde.org>
+Date: Tue, 30 Apr 2019 00:55:12 +0200
+Subject: Correctly show memory sizes > 4 GiB on 32 bit Linux
+
+BUG: 406351
+FIXED-IN: 5.16.0
+
+Differential Revision: https://phabricator.kde.org/D20828
+---
+ Modules/about-distro/src/Module.cpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Modules/about-distro/src/Module.cpp b/Modules/about-distro/src/Module.cpp
+index 56358cd..b4bc67e 100644
+--- a/Modules/about-distro/src/Module.cpp
++++ b/Modules/about-distro/src/Module.cpp
+@@ -56,7 +56,7 @@ static qlonglong calculateTotalRam()
+     struct sysinfo info;
+     if (sysinfo(&info) == 0)
+         // manpage "sizes are given as multiples of mem_unit bytes"
+-        ret = info.totalram * info.mem_unit;
++        ret = qlonglong(info.totalram) * info.mem_unit;
+ #elif defined(Q_OS_FREEBSD)
+     /* Stuff for sysctl */
+     size_t len;
+-- 
+cgit v1.1
+
diff --git a/kinfocenter5.changes b/kinfocenter5.changes
index 45929dc..8895515 100644
--- a/kinfocenter5.changes
+++ b/kinfocenter5.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Tue Apr 30 05:15:51 UTC 2019 - wbauer@tmo.at
+
+- Add Correctly-show-mem-size-over-4GiB-on-32bit.patch to fix wrong
+  display of RAM size on a 32bit system if there is more than 4 GiB
+  (boo#1131826, kde#406351)
+
 -------------------------------------------------------------------
 Tue Apr  2 12:40:57 UTC 2019 - fabian@ritter-vogt.de
 
diff --git a/kinfocenter5.spec b/kinfocenter5.spec
index cf886bb..99dc649 100644
--- a/kinfocenter5.spec
+++ b/kinfocenter5.spec
@@ -37,6 +37,8 @@ Source2:        plasma.keyring
 %endif
 # PATCH-FIX-OPENSUSE plasma-session-name.patch
 Patch0:         plasma-session-name.patch
+# PATCH-FIX-UPSTREAM
+Patch1:         Correctly-show-mem-size-over-4GiB-on-32bit.patch
 BuildRequires:  extra-cmake-modules >= 1.2.0
 BuildRequires:  kf5-filesystem
 BuildRequires:  libraw1394-devel
@@ -86,7 +88,7 @@ KDE Utility that provides information about a computer system.
 %lang_package
 %prep
 %setup -q -n kinfocenter-%{version}
-%patch0 -p1
+%autopatch -p1
 
 %build
   %cmake_kf5 -d build -- -DCMAKE_INSTALL_LOCALEDIR=%{_kf5_localedir}