diff --git a/Makefile.bsd b/Makefile.bsd
index ac8bfd6..796cbc3 100644
--- a/Makefile.bsd
+++ b/Makefile.bsd
@@ -69,7 +69,7 @@ SMALL_OPTS = -DBUFSIZE=8030 -DMAXREWRITE=1030 -DSYSTEM_MAXCONN=1024
 
 # redefine this if you want to add some special PATH to include/libs
 ADDINC =
-ADDLIB =
+ADDLIB = -lz
 
 # redefine this if you want to add some special .o files
 OPT_OBJS =