diff --git a/Shorewall/Perl/Shorewall/Config.pm b/Shorewall/Perl/Shorewall/Config.pm
index 9f8689615..2c3465c94 100644
--- a/Shorewall/Perl/Shorewall/Config.pm
+++ b/Shorewall/Perl/Shorewall/Config.pm
@@ -1908,7 +1908,7 @@ sub load_kernel_modules( ) {
 
 	close LSMOD;
 
-	$config{MODULE_SUFFIX} = 'o gz ko o.gz ko.gz' unless $config{MODULES_SUFFIX};
+	$config{MODULE_SUFFIX} = 'o gz ko o.gz ko.gz' unless $config{MODULE_SUFFIX};
 
 	my @suffixes = split /\s+/ , $config{MODULE_SUFFIX};
 
@@ -2029,7 +2029,13 @@ sub determine_capabilities( $ ) {
     $capabilities{IPP2P_MATCH}     = qt1( "$iptables -A $sillyname -p tcp -m ipp2p --edk -j ACCEPT" );
     $capabilities{OLD_IPP2P_MATCH} = qt1( "$iptables -A $sillyname -p tcp -m ipp2p --ipp2p -j ACCEPT" ) if $capabilities{IPP2P_MATCH};
     $capabilities{LENGTH_MATCH}    = qt1( "$iptables -A $sillyname -m length --length 10:20 -j ACCEPT" );
-    $capabilities{ENHANCED_REJECT} = qt1( "$iptables -A $sillyname -j REJECT --reject-with icmp6-admt-prohibited" );
+    
+    if ( $family == F_IPV6 ) {
+	$capabilities{ENHANCED_REJECT} = qt1( "$iptables -A $sillyname -j REJECT --reject-with icmp6-adm-prohibited" );
+    } else {
+	$capabilities{ENHANCED_REJECT} = qt1( "$iptables -A $sillyname -j REJECT --reject-with icmp-host-prohibited" );
+    }
+
     $capabilities{COMMENTS}        = qt1( qq($iptables -A $sillyname -j ACCEPT -m comment --comment "This is a comment" ) );
 
     $capabilities{HASHLIMIT_MATCH} = qt1( "$iptables -A $sillyname -m hashlimit --hashlimit-upto 3/min --hashlimit-burst 3 --hashlimit-name $sillyname --hashlimit-mode srcip -j ACCEPT" );