diff --git a/scripts/OPAL.build b/scripts/OPAL.build
index aa49cc3..fca9ff3 100755
--- a/scripts/OPAL.build
+++ b/scripts/OPAL.build
@@ -2,18 +2,18 @@
 
 source "$(dirname $0)/../lib/libem.bash"
 
+# add -fopenmp to CC and CXX, if you want to compile with OpenMP
 function em.configure() {
-	CC="$MPICC -fopenmp" CXX="$MPICXX -fopenmp" cmake \
+	CC="$MPICC" CXX="$MPICXX" cmake \
 		-DCMAKE_INSTALL_PREFIX="${PREFIX}" \
 		-DCMAKE_BUILD_TYPE=RELEASE \
 		-DENABLE_SAAMG_SOLVER=TRUE \
 		"${MODULE_SRCDIR}"
 }
 
-em.add_to_family 'Tools'
+em.add_to_family 'MPI'
 em.set_runtime_dependencies "${COMPILER}" "${MPI}"
 em.set_build_dependencies 'cmake' "${COMPILER}" "${MPI}" 'hdf5' 'H5hut' 'trilinos' 'ippl' 'gsl'
-em.set_supported_compilers 'gcc/4.7'
+em.set_supported_compilers 'gcc/4.7' 'gcc/4.8'
 em.make_all
 
-