diff --git a/var/spack/repos/builtin/packages/mumps/package.py b/var/spack/repos/builtin/packages/mumps/package.py
index 5a5110d1e17c991dd01a2db12e5ecc97bc447848..773f7e9b1fcfe8e8786b92c1f660f0b1be1cd82a 100644
--- a/var/spack/repos/builtin/packages/mumps/package.py
+++ b/var/spack/repos/builtin/packages/mumps/package.py
@@ -15,6 +15,7 @@ class Mumps(Package):
     homepage = "http://mumps.enseeiht.fr"
     url      = "http://mumps.enseeiht.fr/MUMPS_5.0.1.tar.gz"
 
+    version('5.3.3', sha256='27e7749ac05006bf8e81a457c865402bb72a42bf3bc673da49de1020f0f32011')
     version('5.2.0', sha256='41f2c7cb20d69599fb47e2ad6f628f3798c429f49e72e757e70722680f70853f')
     version('5.1.2', sha256='eb345cda145da9aea01b851d17e54e7eef08e16bfa148100ac1f7f046cd42ae9')
     version('5.1.1', sha256='a2a1f89c470f2b66e9982953cbd047d429a002fab9975400cef7190d01084a06')
@@ -265,9 +266,9 @@ def install(self, spec, prefix):
         letters_variants = [
             ['s', '+float'], ['c', '+complex+float'],
             ['d', '+double'], ['z', '+complex+double']]
-        for l, v in letters_variants:
+        for ltr, v in letters_variants:
             if v in spec:
-                make(l + 'examples')
+                make(ltr + 'examples')
 
         install_tree('lib', prefix.lib)
         install_tree('include', prefix.include)