diff --git a/thunderbird.sh.in b/thunderbird.sh.in
index f25f264..8f283d8 100644
--- a/thunderbird.sh.in
+++ b/thunderbird.sh.in
@@ -153,4 +153,7 @@ do
   esac
 done
 
+# Don't throw "old profile" dialog box.
+export MOZ_ALLOW_DOWNGRADE=1
+
 exec $MOZ_PROGRAM "$@"
diff --git a/thunderbird.spec b/thunderbird.spec
index 099b941..9fb5f58 100644
--- a/thunderbird.spec
+++ b/thunderbird.spec
@@ -94,7 +94,7 @@ ExcludeArch: s390x
 Summary:        Mozilla Thunderbird mail/newsgroup client
 Name:           thunderbird
 Version:        68.1.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 URL:            http://www.mozilla.org/projects/thunderbird/
 License:        MPLv1.1 or GPLv2+ or LGPLv2+
 Source0:        ftp://ftp.mozilla.org/pub/thunderbird/releases/%{version}%{?pre_version}/source/thunderbird-%{version}%{?pre_version}.source.tar.xz
@@ -748,6 +748,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 #===============================================================================
 
 %changelog
+* Thu Sep 26 2019 Martin Stransky <stransky@redhat.com> - 68.1.0-2
+- Allow profile downgrade
+
 * Thu Sep 12 2019 Jan Horak <jhorak@redhat.com> - 68.1.0-1
 - Update to 68.1.0