diff --git a/packages/mpi/openmpi/openmpi-1.8.4 b/packages/mpi/openmpi/openmpi-1.8.4
index 63aaaa1..1d4fcad 100755
--- a/packages/mpi/openmpi/openmpi-1.8.4
+++ b/packages/mpi/openmpi/openmpi-1.8.4
@@ -14,7 +14,7 @@ INSTALLER="Christoph Niethammer <niethammer@hlrs.de>"
 A=${PACKAGE}-${VERSION}.tar.bz2
 P=${PACKAGE}-${VERSION}
 
-enable_cuda=1
+enable_cuda=${enable_cuda:=1}
 
 # Other interesting configure options:
 # --enable-mpi-threads