diff --git a/cmake/hdf5.cmake b/cmake/hdf5.cmake
index 393a7a4..a98d824 100644
--- a/cmake/hdf5.cmake
+++ b/cmake/hdf5.cmake
@@ -43,6 +43,7 @@ ExternalProject_Add(${HDF5_NAME}
 )
 ExternalProject_get_property(${HDF5_NAME} INSTALL_DIR)
 
+set(HDF5_ROOT ${INSTALL_DIR})
 set(HDF5_INCLUDE_DIR ${INSTALL_DIR}/include)
 if (CMAKE_BUILD_TYPE MATCHES Debug)
   set(HDF5_LIBRARIES     ${INSTALL_DIR}/lib/${CMAKE_LIBRARY_PREFIX}hdf5_debug${CMAKE_LIBRARY_SUFFIX})
diff --git a/cmake/legion.cmake b/cmake/legion.cmake
index 1bf8240..736ee6b 100644
--- a/cmake/legion.cmake
+++ b/cmake/legion.cmake
@@ -38,8 +38,7 @@ ExternalProject_Add(${LEGION_NAME}
    -DLegion_USE_GASNet=ON
    -DLegion_USE_CUDA=${LEGION_USE_CUDA}
    -DLegion_USE_HDF5=${LEGION_USE_HDF5}
-   -DHDF5HL_LIBRARY:PATH=${HDF5_HL_LIBRARIES}
-   -DHDF5_LIBRARY:PATH=${HDF5_LIBRARIES}
+   -DHDF5_ROOT:PATH=${HDF5_ROOT}
    -DSZIP_LIBRARY:PATH=${SZIP_LIBRARIES}
    -DZLIB_LIBRARY=${ZLIB_LIBRARIES}
    -DLegion_BUILD_EXAMPLES=${LEGION_BUILD_EXAMPLES}