diff --git a/CMakeLists.txt b/CMakeLists.txt
index 77dbd957..6ebaf0a1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -225,6 +225,8 @@ find_package(Gcrypt 1.6.0 REQUIRED)
 
 find_package(ZLIB REQUIRED)
 
+set(CMAKE_REQUIRED_INCLUDES ${ZLIB_INCLUDE_DIR})
+
 check_cxx_source_compiles("
   #include <zlib.h>