diff --git a/fillup.changes b/fillup.changes
index af5e45d..53161a1 100644
--- a/fillup.changes
+++ b/fillup.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Aug 24 10:45:42 UTC 2022 - Andreas Schwab <schwab@suse.de>
+
+- Makefile is not parallel-safe
+
 -------------------------------------------------------------------
 Wed Apr 27 10:14:27 UTC 2022 - Dirk Müller <dmueller@suse.com>
 
diff --git a/fillup.spec b/fillup.spec
index e333a67..55af816 100644
--- a/fillup.spec
+++ b/fillup.spec
@@ -73,7 +73,8 @@ ln -sf %{_bindir}/fillup $RPM_BUILD_ROOT/bin
 %endif
 
 %check
-make %{?_smp_mflags} test    OPTISPLUS="%{optflags}"
+# Makefile is not parallel-safe
+make test    OPTISPLUS="%{optflags}"
 
 %files
 %defattr(-,root,root)