diff --git a/Pmodules/libpbuild.bash b/Pmodules/libpbuild.bash
index 35ce306..6df73c3 100644
--- a/Pmodules/libpbuild.bash
+++ b/Pmodules/libpbuild.bash
@@ -754,7 +754,7 @@ pbuild::make_all() {
 		: ${CUDA_HIERARCHY:='${COMPILER}/${COMPILER_VERSION} cuda/${CUDA_VERSION}'}
 		: ${MPI_HIERARCHY:='${COMPILER}/${COMPILER_VERSION} ${MPI}/${MPI_VERSION}'}
 		: ${HDF5_HIERARCHY:='${COMPILER}/${COMPILER_VERSION} ${MPI}/${MPI_VERSION} hdf5/${HDF5_VERSION}'}
-		: ${HDF5_SERIAL_HIERARCHY:='${COMPILER}/${COMPILER_VERSION} hdf5_serial/${HDF5_SERIAL_VERSION}'}
+		: ${HDF5_serial_HIERARCHY:='${COMPILER}/${COMPILER_VERSION} hdf5_serial/${HDF5_SERIAL_VERSION}'}
 
 		# evaluate
 		local names=()