diff --git a/kde5-detection.patch b/kde5-detection.patch
new file mode 100644
index 0000000..23f0092
--- /dev/null
+++ b/kde5-detection.patch
@@ -0,0 +1,58 @@
+From 998d18077615b28bca7b411528c8a1c11665e173 Mon Sep 17 00:00:00 2001
+From: Michael Weghorn <m.weghorn@posteo.de>
+Date: Tue, 29 Jan 2019 08:18:15 +0100
+Subject: [PATCH] tdf#123011 Detect kde5 desktop in Plasma Wayland session
+
+Both env variables 'KDE_FULL_SESSION' and 'KDE_SESSION_VERSION'
+are set in both X11 and Wayland sessions for Plasma 5 (kde5),
+s.a. https://userbase.kde.org/KDE_System_Administration/Environment_Variables,
+so drop the alternative X-specific check.
+
+Move the check for a kde5 upward, so that kde5 is actually detected
+in a Plasma 5 Wayland session, rather than falling back to
+assuming GNOME.
+
+Change-Id: Ieb5b47272f375ceed4d44a2ccc5b517222ae86b9
+---
+
+diff --git a/vcl/unx/generic/desktopdetect/desktopdetector.cxx b/vcl/unx/generic/desktopdetect/desktopdetector.cxx
+index e7cb9b9..9f65b16 100644
+--- a/vcl/unx/generic/desktopdetect/desktopdetector.cxx
++++ b/vcl/unx/generic/desktopdetect/desktopdetector.cxx
+@@ -191,14 +191,11 @@
+     return false;
+ }
+ 
+-static bool is_kde5_desktop( Display* pDisplay )
++static bool is_kde5_desktop()
+ {
+     static const char * pFullVersion = getenv( "KDE_FULL_SESSION" );
+     static const char * pSessionVersion = getenv( "KDE_SESSION_VERSION" );
+     if ( pFullVersion && pSessionVersion && strcmp(pSessionVersion, "5") == 0)
+-        return true;
+-
+-    if ( KDEVersion( pDisplay ) == 5 )
+         return true;
+ 
+     return false;
+@@ -280,6 +277,9 @@
+         ret = DESKTOP_LXQT;
+     else
+     {
++        if ( is_kde5_desktop() )
++            return DESKTOP_KDE5;
++
+         // tdf#121275 if we still can't tell, and WAYLAND_DISPLAY
+         // is set, default to gtk3
+         const char* pWaylandStr = getenv("WAYLAND_DISPLAY");
+@@ -328,9 +328,7 @@
+ 
+         XErrorHandler pOldHdl = XSetErrorHandler( autodect_error_handler );
+ 
+-        if ( is_kde5_desktop( pDisplay ) )
+-            ret = DESKTOP_KDE5;
+-        else if ( is_kde4_desktop( pDisplay ) )
++        if ( is_kde4_desktop( pDisplay ) )
+             ret = DESKTOP_KDE4;
+         else if ( is_gnome_desktop( pDisplay ) )
+             ret = DESKTOP_GNOME;
diff --git a/libreoffice.changes b/libreoffice.changes
index e22de40..70df4d7 100644
--- a/libreoffice.changes
+++ b/libreoffice.changes
@@ -3,6 +3,8 @@ Fri Jan 25 09:12:12 UTC 2019 - Tomáš Chvátal <tchvatal@suse.com>
 
 - Switch to full KDE stack for KDE Frameworks integration instead
   of gtk3 KDE wrapper bsc#1123131
+- Add patch to fix detection of KDE session on wayland:
+  * kde5-detection.patch
 
 -------------------------------------------------------------------
 Thu Jan 24 13:19:29 UTC 2019 - Tomáš Chvátal <tchvatal@suse.com>
diff --git a/libreoffice.spec b/libreoffice.spec
index 8c071bc..6b12ac7 100644
--- a/libreoffice.spec
+++ b/libreoffice.spec
@@ -101,6 +101,7 @@ Patch2:         nlpsolver-no-broken-help.diff
 Patch3:         mediawiki-no-broken-help.diff
 Patch4:         java112.patch
 Patch5:         old-boost.patch
+Patch6:         kde5-detection.patch
 # try to save space by using hardlinks
 Patch990:       install-with-hardlinks.diff
 BuildRequires:  %{name}-share-linker
@@ -962,6 +963,7 @@ Provides %{langname} translations and additional resources (help files, etc.) fo
 %patch2
 %patch3
 %patch4 -p1
+%patch6 -p1
 %patch990 -p1
 
 # Disable some of the failing tests (some are random)