diff --git a/iptables.spec b/iptables.spec
index fea32a8..6e78faf 100644
--- a/iptables.spec
+++ b/iptables.spec
@@ -191,7 +191,9 @@ update-alternatives \
 	--slave "%_sbindir/ip6tables-save" ip6tables-save "%_sbindir/xtables-legacy-multi"
 
 %postun
-update-alternatives --remove iptables "%_sbindir/xtables-legacy-multi"
+if test "$1" = 0; then
+	update-alternatives --remove iptables "%_sbindir/xtables-legacy-multi"
+fi
 
 %post backend-nft
 update-alternatives \
@@ -209,9 +211,11 @@ update-alternatives --install "%_sbindir/ebtables" ebtables "%_sbindir/xtables-n
 	--slave "%_sbindir/ebtables-save" ebtables-save "%_sbindir/xtables-nft-multi"
 
 %postun backend-nft
-update-alternatives --remove iptables "%_sbindir/xtables-nft-multi"
-update-alternatives --remove arptables "%_sbindir/xtables-nft-multi"
-update-alternatives --remove ebtables "%_sbindir/xtables-nft-multi"
+if test "$1" = 0; then
+	update-alternatives --remove iptables "%_sbindir/xtables-nft-multi"
+	update-alternatives --remove arptables "%_sbindir/xtables-nft-multi"
+	update-alternatives --remove ebtables "%_sbindir/xtables-nft-multi"
+fi
 
 %post   -n libipq0 -p /sbin/ldconfig
 %postun -n libipq0 -p /sbin/ldconfig