diff --git a/mozilla/network/module/tests/Makefile.in b/mozilla/network/module/tests/Makefile.in
index 0d6d5f72184..3cab24a4248 100644
--- a/mozilla/network/module/tests/Makefile.in
+++ b/mozilla/network/module/tests/Makefile.in
@@ -56,9 +56,9 @@ LIBS = \
 	-lraptorbase \
 	-lgmbase$(MOZ_TOOLKIT) \
 	-lsecfree \
-	-lz \
 	$(NSPR_LIBS) \
 	$(TK_LIBS) \
+	$(ZLIB_LIBS) \
 	$(NULL)
 
 include $(topsrcdir)/config/config.mk