diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8a922d7..d9c353b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -203,7 +203,6 @@ else()
     FIND_PACKAGE(JPEG REQUIRED)
 endif()
 
-FIND_PACKAGE(ZLIB REQUIRED)
 FIND_PACKAGE(PNG REQUIRED)
 FIND_PACKAGE(CURL REQUIRED)
 FIND_LIBRARY(ZEROMQ_LIBRARIES zmq)
@@ -237,6 +236,7 @@ set (support_LIBS ${JSON_LIBRARIES} ${boost_LIBS} ${ZEROMQ_LIBRARIES} ${PNG_LIBR
 if (WITH_LIBDEFLATE)
     set (support_LIBS ${support_LIBS} ${LIBDEFLATE_LIBRARY})
 else()
+    FIND_PACKAGE(ZLIB REQUIRED)
     set (support_LIBS ${support_LIBS} ${ZLIB_LIBRARIES})
 endif()