diff --git a/o/OpenMPI/OpenMPI-2.1.5-GCC-6.3.0-2.27.eb b/o/OpenMPI/OpenMPI-2.1.5-GCC-6.3.0-2.27.eb
index eaace72f..d77440f9 100644
--- a/o/OpenMPI/OpenMPI-2.1.5-GCC-6.3.0-2.27.eb
+++ b/o/OpenMPI/OpenMPI-2.1.5-GCC-6.3.0-2.27.eb
@@ -22,7 +22,7 @@ configopts = '--enable-shared --enable-mpi-thread-multiple --with-verbs '
 # suppress failure modes in relation to mpirun path
 configopts += '--enable-mpirun-prefix-by-default '
 configopts += '--with-hwloc=$EBROOTHWLOC '  # hwloc support
-# configopts += '--disable-dlopen '  # dont disable dlopen!
+configopts += '--disable-dlopen '  # dont disable dlopen!
 # https://github.com/open-mpi/ompi/issues/3630
 configopts += '--with-tm=/opt/pbs '  # Enable PBS
 #configopts += '--enable-mpi-java '  # Java support RT#4090