diff --git a/postgresql.postinstall b/postgresql.postinstall
index 27ddb86..610406f 100644
--- a/postgresql.postinstall
+++ b/postgresql.postinstall
@@ -24,5 +24,7 @@ sed -i -e "s,^#default_with_oids\ =\ off,default_with_oids\ =\ on," \
     -e "s,^#backslash_quote\ =\ safe_encoding,backslash_quote\ =\ on," \
     -e "s,^#add_missing_from\ =\ off,add_missing_from\ =\ on," /var/opt/postgresql/data/postgresql.conf
 
+sed -i -e "s,postmaster -i,postmaster -i -o -e," /etc/opt/postgresql/run
+
 # create the runit link
 ln -svnf /etc/opt/postgresql /service/postgresql