diff --git a/contrib/zlib/CMakeLists.txt b/contrib/zlib/CMakeLists.txt
index 5d7b58c43..c05509fdf 100644
--- a/contrib/zlib/CMakeLists.txt
+++ b/contrib/zlib/CMakeLists.txt
@@ -1,7 +1,11 @@
 cmake_minimum_required(VERSION 2.4.4)
 set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS ON)
 
+# use the old project command http://www.cmake.org/cmake/help/v3.0/policy/CMP0048.html
+cmake_policy(PUSH)
+cmake_policy(SET CMP0048 OLD)
 project(zlib C)
+cmake_policy(POP)
 
 set(VERSION "1.2.8")