diff --git a/Examples/makensis.nsi b/Examples/makensis.nsi
index 017b96f8..4c7e6b76 100644
--- a/Examples/makensis.nsi
+++ b/Examples/makensis.nsi
@@ -123,7 +123,11 @@ ${MementoSection} "NSIS Core Files (required)" SecCore
   File /nonfatal ..\NSIS.exe.manifest
   SetOutPath $INSTDIR\Bin
   File ..\Bin\makensis.exe
+!ifdef USE_NEW_ZLIB
+  File ..\Bin\zlib.dll
+!else
   File ..\Bin\zlib1.dll
+!endif
 
   IfFileExists $INSTDIR\nsisconf.nsi "" +2
   Rename $INSTDIR\nsisconf.nsi $INSTDIR\nsisconf.nsh
diff --git a/SCons/utils.py b/SCons/utils.py
index 04e3837c..5cb5462a 100644
--- a/SCons/utils.py
+++ b/SCons/utils.py
@@ -22,8 +22,10 @@ def AddZLib(env, platform, alias='install-utils'):
 			env.Append(CPPPATH = env['ZLIB_W32_INC'])
 			env.Append(LIBPATH = env['ZLIB_W32_LIB'])
 			zlib = ['zdll', 'z']
-			if 'ZLIB_W32_DLL' in env:
+			if 'ZLIB_W32_DLL' in env and env['ZLIB_W32_DLL']:
 				env.DistributeW32Bin(env['ZLIB_W32_DLL'], alias=alias)
+            if 'ZLIB_W32_NEW_DLL' in env and env['ZLIB_W32_NEW_DLL']:
+                env.DistributeW32Bin(env['ZLIB_W32_NEW_DLL'], alias=alias)
 		else:
 			print 'Please specify folder of zlib for Win32 via ZLIB_W32'
 			Exit(1)
diff --git a/SConstruct b/SConstruct
index 7d495403..a2330af8 100644
--- a/SConstruct
+++ b/SConstruct
@@ -430,6 +430,8 @@ if 'ZLIB_W32' in defenv:
 			break
 	defenv['ZLIB_W32_DLL'] = defenv.FindFile('zlib1.dll', 
 		[defenv['ZLIB_W32'], defenv['ZLIB_W32_LIB']])
+	defenv['ZLIB_W32_NEW_DLL'] = defenv.FindFile('zlib.dll',
+		[defenv['ZLIB_W32'], defenv['ZLIB_W32_LIB']])
 
 tools = defenv['TOOLS']
 
@@ -484,6 +486,8 @@ inst_env['NSISCONFDIR'] = os.path.abspath(str(defenv['INSTDISTDIR']))
 
 def build_installer(target, source, env):
 	cmdline = FindMakeNSIS(env, str(env['INSTDISTDIR'])) + ' %sDOUTFILE=%s %s' % (optchar, target[0].abspath, env['INSTVER'])
+	if 'ZLIB_W32_NEW_DLL' in env and env['ZLIB_W32_NEW_DLL']:
+		cmdline += ' %sDUSE_NEW_ZLIB' % optchar
 	cmd = env.Command(None, source, cmdline + ' $SOURCE')
 	AlwaysBuild(cmd)
 	# Comment out the following if you want to see the installation directory