diff --git a/modules/zlib/standalone/Makefile.in b/modules/zlib/standalone/Makefile.in
deleted file mode 100644
index 407cfd03f14..00000000000
--- a/modules/zlib/standalone/Makefile.in
+++ /dev/null
@@ -1,77 +0,0 @@
-#
-# ***** BEGIN LICENSE BLOCK *****
-# Version: MPL 1.1/GPL 2.0/LGPL 2.1
-#
-# The contents of this file are subject to the Mozilla Public License Version
-# 1.1 (the "License"); you may not use this file except in compliance with
-# the License. You may obtain a copy of the License at
-# http://www.mozilla.org/MPL/
-#
-# Software distributed under the License is distributed on an "AS IS" basis,
-# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
-# for the specific language governing rights and limitations under the
-# License.
-#
-# The Original Code is mozilla.org code.
-#
-# The Initial Developer of the Original Code is
-# Netscape Communications Corporation.
-# Portions created by the Initial Developer are Copyright (C) 1998
-# the Initial Developer. All Rights Reserved.
-#
-# Contributor(s):
-#   Samir Gehani <sgehani@netscape.com>
-#
-# Alternatively, the contents of this file may be used under the terms of
-# either the GNU General Public License Version 2 or later (the "GPL"), or
-# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
-# in which case the provisions of the GPL or the LGPL are applicable instead
-# of those above. If you wish to allow use of your version of this file only
-# under the terms of either the GPL or the LGPL, and not to allow others to
-# use your version of this file under the terms of the MPL, indicate your
-# decision by deleting the provisions above and replace them with the notice
-# and other provisions required by the GPL or the LGPL. If you do not delete
-# the provisions above, a recipient may use your version of this file under
-# the terms of any one of the MPL, the GPL or the LGPL.
-#
-# ***** END LICENSE BLOCK *****
-
-DEPTH		= ../../..
-topsrcdir	= @top_srcdir@
-srcdir		= @srcdir@
-VPATH		= @srcdir@
-
-include $(DEPTH)/config/autoconf.mk
-include $(srcdir)/../src/objs.mk
-
-MODULE		= zlib
-LIBRARY_NAME	= mozz_s
-
-CSRCS		= $(MODULES_ZLIB_SRC_LCSRCS)
-
-FORCE_STATIC_LIB = 1
-SRCS_IN_OBJDIR	= 1
-
-ifeq ($(OS_ARCH),WINNT)
-USE_STATIC_LIBS=1
-endif
-
-ifeq ($(OS_ARCH),OS2)
-USE_STATIC_LIBS=1
-endif
-
-EXTRA_DSO_LDOPTS += $(MOZ_COMPONENT_NSPR_LIBS)
-
-GARBAGE		+= $(MODULES_ZLIB_SRC_LCSRCS) $(wildcard *.$(OBJ_SUFFIX))
-
-ifeq ($(OS_ARCH),WINNT)
-GARBAGE		+= $(addprefix $(srcdir)/,$(MODULES_ZLIB_SRC_LCSRCS))
-endif
-
-include $(topsrcdir)/config/rules.mk
-
-LOCAL_INCLUDES = -I$(srcdir)/../src
-
-export:: $(MODULES_ZLIB_SRC_CSRCS)
-	$(INSTALL) $^ .
-
diff --git a/toolkit/toolkit-makefiles.sh b/toolkit/toolkit-makefiles.sh
index 50423e00576..a41728e8ba7 100644
--- a/toolkit/toolkit-makefiles.sh
+++ b/toolkit/toolkit-makefiles.sh
@@ -714,10 +714,6 @@ MAKEFILES_accessible="
   accessible/build/Makefile
 "
 
-MAKEFILES_zlib="
-  modules/zlib/standalone/Makefile
-"
-
 MAKEFILES_libmar="
   modules/libmar/Makefile
   modules/libmar/src/Makefile
@@ -775,7 +771,6 @@ add_makefiles "
   $MAKEFILES_xulapp
   $MAKEFILES_libpr0n
   $MAKEFILES_accessible
-  $MAKEFILES_zlib
   $MAKEFILES_libmar
   $MAKEFILES_extensions
   $MAKEFILES_startupcache
diff --git a/toolkit/toolkit-tiers.mk b/toolkit/toolkit-tiers.mk
index 7861158a1c9..2ebc7ff1a08 100644
--- a/toolkit/toolkit-tiers.mk
+++ b/toolkit/toolkit-tiers.mk
@@ -77,11 +77,6 @@ ifndef MOZ_NATIVE_JPEG
 tier_platform_dirs	+= jpeg
 endif
 
-# Installer needs standalone libjar, hence standalone zlib
-ifdef MOZ_INSTALLER
-tier_platform_dirs	+= modules/zlib/standalone
-endif
-
 ifdef MOZ_UPDATER
 ifndef MOZ_NATIVE_BZ2
 tier_platform_dirs += modules/libbz2