diff --git a/CMakeLists.txt b/CMakeLists.txt
index c065dc0..b9d2edf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -49,6 +49,7 @@ IF(YORICK_SUPPORT)
 ENDIF(YORICK_SUPPORT)
 
 find_program(CYTHON cython)
+find_library(ZLIB z)
 
 if(HDF5_ROOTDIR)
   SET(ENV{HDF5_ROOT} ${HDF5_ROOTDIR})
diff --git a/sample/CMakeLists.txt b/sample/CMakeLists.txt
index cd58827..9131f69 100644
--- a/sample/CMakeLists.txt
+++ b/sample/CMakeLists.txt
@@ -36,6 +36,7 @@ target_link_libraries(testPool ${tolink})
 
 if (HDF5_FOUND)
     include_directories(${HDF5_INCLUDE_PATH})
+    SET(tolink ${tolink} ${ZLIB})
 
     add_executable(testReadFlash testReadFlash.cpp)
     target_link_libraries(testReadFlash ${tolink})