diff --git a/brltty.spec b/brltty.spec
index a884a58..ae39fa9 100644
--- a/brltty.spec
+++ b/brltty.spec
@@ -430,9 +430,9 @@ if [ ! -e %{_sysconfdir}/brlapi.key ]; then
   chgrp brlapi %{_sysconfdir}/brlapi.key
   chmod 0640 %{_sysconfdir}/brlapi.key
 fi
-/sbin/ldconfig
+%{?ldconfig}
 
-%postun -n brlapi -p /sbin/ldconfig
+%ldconfig_postun -n brlapi
 
 %files -f %{name}.lang
 %config(noreplace) %{_sysconfdir}/brltty.conf