Fix problem with udc
diff --git a/libebtc.c b/libebtc.c
index a4232fd..dfc277b 100644
--- a/libebtc.c
+++ b/libebtc.c
@@ -1067,7 +1067,7 @@
 		decrease_chain_jumps(replace);
 		ebt_flush_chains(replace);
 		remove_udc(replace);
-	} while (chain_nr != -1);
+	} while (chain_nr == -1);
 	replace->selected_chain = chain_nr;
 }