diff --git a/slurm.changes b/slurm.changes
index 8d49d7a..510569e 100644
--- a/slurm.changes
+++ b/slurm.changes
@@ -1,3 +1,12 @@
+-------------------------------------------------------------------
+Wed Jul 11 12:04:55 UTC 2018 - eich@suse.com
+
+- Shield comments between script snippets with a %{!?nil:...} to
+  avoid them being interpreted as scripts - in which case the update
+  level is passed as argument (see chapter 'Shared libraries' in:
+  https://en.opensuse.org/openSUSE:Packaging_scriptlet_snippets)
+  (bsc#1100850). 
+
 -------------------------------------------------------------------
 Tue Jun  5 13:24:43 UTC 2018 - cgoll@suse.com
 
diff --git a/slurm.spec b/slurm.spec
index 061161a..aca9dbe 100644
--- a/slurm.spec
+++ b/slurm.spec
@@ -562,12 +562,14 @@ exit 0
 %post -n  libpmi%{pmi_so} -p /sbin/ldconfig
 %postun -n  libpmi%{pmi_so} -p /sbin/ldconfig
 
+%{!?nil:
 # On update the %%postun code of the old package restarts the
 # service. This breaks in case the ABI between slurm and its
 # plugins has changed as updates are not atomic. Since we cannot
 # fix the old scripts we need these macros as a workaround.
 # They should be removed at some point.
 # Do pretrans in lua: https://fedoraproject.org/wiki/Packaging:Scriptlets
+}
 %define _test_rest() %{?with_systemd: os.remove("/run/%{1}.rst")
  if os.execute() and os.getenv("YAST_IS_RUNNING") ~= "instsys" then
   if os.execute("systemctl status %{1} &>/dev/null") then 
@@ -576,7 +578,9 @@ exit 0
  end
 }
 %define _rest() %{?with_systemd:[ -e /run/%{1}.rst ] && { systemctl status %{1} &>/dev/null || systemctl restart %{1}; }; rm -f /run/%{1}.rst;}
+%{!?nil:
 # Until a posttrans macro has been added to macros.systemd, we need this
+}
 %define _res_update() %{?with_systemd:%{expand:%%_restart_on_update %{?*}};}
 
 %pretrans -p <lua>