diff --git a/Shorewall/Perl/Shorewall/Chains.pm b/Shorewall/Perl/Shorewall/Chains.pm
index 69f06d637..52e6e8d82 100644
--- a/Shorewall/Perl/Shorewall/Chains.pm
+++ b/Shorewall/Perl/Shorewall/Chains.pm
@@ -1195,9 +1195,13 @@ sub compatible( $$ ) {
 	}
     }
     #
-    # Don't combine chains where each specifies '-m policy'
+    # Don't combine chains where each specifies
+    #    '-m policy'
+    #    ( --dport or --sport or -m multiport )
     #
-    return ! ( $ref1->{policy} && $ref2->{policy} );
+    return ! ( $ref1->{policy} && $ref2->{policy} ||
+	       ( ( $ref1->{multiport} && ( $ref2->{dport} || $ref2->{sport} || $ref2->{multiport} ) ) ||
+		 ( $ref2->{multiport} && ( $ref1->{dport} || $ref1->{sport} || $ref1->{multiport} ) ) ) );
 }
 
 #