diff --git a/mono-core.changes b/mono-core.changes
index 812e4af..c71cb65 100644
--- a/mono-core.changes
+++ b/mono-core.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Apr 24 17:25:10 UTC 2019 - Martin Liška <mliska@suse.cz>
+
+- Disable LTO (boo#1133266).
+
 -------------------------------------------------------------------
 Fri Apr 12 00:00:00 UTC 2019 - fwdsbs.to.11df@xoxy.net
 - Update to version 5.20.1 Stable (5.20.1.19)
diff --git a/mono-core.spec b/mono-core.spec
index 97cf5af..bfc49e7 100644
--- a/mono-core.spec
+++ b/mono-core.spec
@@ -216,6 +216,7 @@ technologies that have been submitted to the ECMA for standardization.
 %patch21 -p1
 
 %build
+%define _lto_cflags %{nil}
 # TODO: re-check on next release, already fixed in master branch
 # remove accidentally packaged build artifacts that lead to build failures on non x86_64 platforms
 # see https://github.com/mono/mono/issues/11619, https://github.com/mono/mono/issues/11501 for more info