diff --git a/Changelog b/Changelog
index c8208fd4f..5d2d0daca 100644
--- a/Changelog
+++ b/Changelog
@@ -1,3 +1,4 @@
+- Fix unexpanded MLS/MCS fields in monolithic seusers file.
 - Type transition fix in Postgresql database objects from KaiGai Kohei.
 - Support for file context path substitutions (file_contexts.subs).
 
diff --git a/Rules.monolithic b/Rules.monolithic
index 5b0d53477..f6b639deb 100644
--- a/Rules.monolithic
+++ b/Rules.monolithic
@@ -240,7 +240,8 @@ $(appdir)/customizable_types: $(policy_conf)
 
 $(installdir)/seusers: $(seusers)
 	@mkdir -p $(installdir)
-	$(verbose) $(INSTALL) -m 644 $^ $@
+	$(verbose) $(M4) $(M4PARAM) $(m4support) $^ | $(GREP) '^[a-z_]' > $(tmpdir)/seusers
+	$(verbose) $(INSTALL) -m 644 $(tmpdir)/seusers $@
 
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