zlib is now optional.
diff --git a/INSTALL b/INSTALL
index 53fe939..49013e9 100644
--- a/INSTALL
+++ b/INSTALL
@@ -7,11 +7,6 @@
  - clang: -ftrapv and -sanitize=integer require the compiler-rt runtime
   (CC=clang LDFLAGS=--rtlib=compiler-rt ./configure)
 
-You will need a working installation of zlib:
-
-Zlib 1.1.4 or 1.2.1.2 or greater (earlier 1.2.x versions have problems):
-http://www.gzip.org/zlib/
-
 To support Privilege Separation (which is now required) you will need
 to create the user, group and directory used by sshd for privilege
 separation.  See README.privsep for details.
@@ -19,6 +14,10 @@
 
 The remaining items are optional.
 
+A working installation of zlib:
+Zlib 1.1.4 or 1.2.1.2 or greater (earlier 1.2.x versions have problems):
+http://www.gzip.org/zlib/
+
 libcrypto from either of LibreSSL or OpenSSL.  Building without libcrypto
 is supported but severely restricts the avilable ciphers and algorithms.
  - LibreSSL (https://www.libressl.org/)