diff --git a/configure.in b/configure.in
index 3603030d99..a1f573b014 100644
--- a/configure.in
+++ b/configure.in
@@ -1,6 +1,6 @@
 
 AC_INIT
-AM_INIT_AUTOMAKE(tor, 0.0.2pre4)
+AM_INIT_AUTOMAKE(tor, 0.0.2pre6)
 AM_CONFIG_HEADER(orconfig.h)
 
 CFLAGS="-Wall -O2"
@@ -133,7 +133,7 @@ LIBS="$saved_LIBS -lcrypto"
 
 dnl The warning message here is no longer strictly accurate.
 
-AC_CHECK_HEADERS(unistd.h string.h signal.h netdb.h ctype.h poll.h sys/poll.h sys/types.h sys/fcntl.h sys/ioctl.h sys/socket.h sys/time.h netinet/in.h arpa/inet.h errno.h assert.h stdint.h zlib.h, , AC_MSG_WARN(some headers were not found, compilation may fail))
+AC_CHECK_HEADERS(unistd.h string.h signal.h netdb.h ctype.h poll.h sys/poll.h sys/types.h sys/fcntl.h sys/ioctl.h sys/socket.h sys/time.h netinet/in.h arpa/inet.h errno.h assert.h stdint.h, , AC_MSG_WARN(some headers were not found, compilation may fail))
 
 AC_OUTPUT(Makefile src/Makefile src/common/Makefile src/orkeygen/Makefile src/or/Makefile)