diff --git a/var/spack/packages/hdf5/package.py b/var/spack/packages/hdf5/package.py
index 1dfd3c03455..992dd8ec700 100644
--- a/var/spack/packages/hdf5/package.py
+++ b/var/spack/packages/hdf5/package.py
@@ -23,9 +23,9 @@ def install(self, spec, prefix):
             "--prefix=%s" % prefix,
             "--with-zlib=%s" % spec['zlib'].prefix,
             "--enable-parallel",
-            "--enable-shared")
-           # "CC=%s" % spec['mpich'].prefix.bin + "/mpicc",
-           # "CXX=%s" % spec['mpich'].prefix.bin + "/mpic++")
+            "--enable-shared",
+            "CC=%s" % spec['mpich'].prefix.bin + "/mpicc",
+            "CXX=%s" % spec['mpich'].prefix.bin + "/mpic++")
 
         make()
         make("install")