diff --git a/lightdm.service b/lightdm.service
index be4c331..506b2ff 100644
--- a/lightdm.service
+++ b/lightdm.service
@@ -33,6 +33,7 @@ ExecStart=/usr/sbin/lightdm
 Restart=always
 IgnoreSIGPIPE=no
 BusName=org.freedesktop.DisplayManager
+LimitMEMLOCK=16777216
 
 [Install]
 Alias=display-manager.service
diff --git a/lightdm.spec b/lightdm.spec
index 6a934c7..84493b2 100644
--- a/lightdm.spec
+++ b/lightdm.spec
@@ -7,7 +7,7 @@
 Name:		lightdm
 Summary:	A cross-desktop Display Manager
 Version:	1.28.0
-Release:	4%{?dist}
+Release:	5%{?dist}
 
 # library/bindings are LGPLv2 or LGPLv3, the rest GPLv3+
 License:	(LGPLv2 or LGPLv3) and GPLv3+
@@ -302,6 +302,10 @@ fi
 
 
 %changelog
+* Sat Jan 12 2019 Wolfgang Ulbrich <fedora@raveit.de> - 1.28.0-5
+- limit memlock in systemd unit
+- fix https://bugzilla.redhat.com/show_bug.cgi?id=1662857
+
 * Mon Dec 31 2018 Leigh Scott <leigh123linux@googlemail.com> - 1.28.0-4
 - rebuilt