diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 33bc1eb..2a3f1c5 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -17,7 +17,7 @@ if(ENABLE_mpi)
 endif()
 
 if(ENABLE_hdf5 AND ENABLE_mpi)
-  add_subdirectory(opt/hdf5-mpi)
+  add_subdirectory(opt/hdf5_mpi)
 endif()
 
 install(DIRECTORY include/ DESTINATION ${INSTALL_PATH}/include/cnorxz)