diff --git a/rpm_spec/qmgr.spec b/rpm_spec/qmgr.spec
index a894e77..2576082 100644
--- a/rpm_spec/qmgr.spec
+++ b/rpm_spec/qmgr.spec
@@ -67,7 +67,7 @@ cp qubes-manager.desktop $RPM_BUILD_ROOT/etc/xdg/autostart/
 
 %post
 update-desktop-database &> /dev/null || :
-killall -1 qubes-manager
+killall -1 qubes-manager || :
 
 %postun
 update-desktop-database &> /dev/null || :