diff -Naur The Unarchiver/XADMaster/Makefile.linux The Unarchiver_patched/XADMaster/Makefile.linux
--- The Unarchiver/XADMaster/Makefile.linux	2011-04-27 03:32:21.000000000 +0200
+++ The Unarchiver_patched/XADMaster/Makefile.linux	2011-12-22 10:56:13.749166606 +0100
@@ -51,7 +51,8 @@
 	-licuuc \
 	-lobjc \
 	-lstdc++ \
-	-lm
+	-lm \
+	-lz
 
 LDFLAGS =	-Wl,--whole-archive \
 		-fexceptions \