diff --git a/CMakeLists.txt b/CMakeLists.txt
index 60c699d..606b972 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -402,7 +402,7 @@ ELSE(MSVC)
   FIND_PACKAGE(HDF5 COMPONENTS C HL REQUIRED)
 ENDIF(MSVC)
 
-CHECK_LIBRARY_EXISTS(${HDF5_C_LIBRARY_hdf5} H5free_memory "" HAVE_H5FREE_MEMORY)
+CHECK_LIBRARY_EXISTS(${HDF5_C_LIBRARIES} H5free_memory "" HAVE_H5FREE_MEMORY)
 IF(NOT HAVE_H5FREE_MEMORY)
   MESSAGE(STATUS "Plugin support requires libhdf5 with H5Free support. Your libhdf5 install does not provide H5Free.  Please install a newer version of libhdf5 if you require plugin compression support.")
   SET(NC_HAS_DEF_VAR_FILTER "")