diff --git a/sahara/plugins/mapr/domain/service.py b/sahara/plugins/mapr/domain/service.py
index 8f30a02c..c644c3bf 100644
--- a/sahara/plugins/mapr/domain/service.py
+++ b/sahara/plugins/mapr/domain/service.py
@@ -92,8 +92,7 @@ class Service(object):
             cmd = cluster_context.distro.create_install_cmd(packages)
             with instance.remote() as r:
                 r.execute_command(cmd, run_as_root=True,
-                                  timeout=_INSTALL_PACKAGES_TIMEOUT,
-                                  raise_when_error=False)
+                                  timeout=_INSTALL_PACKAGES_TIMEOUT)
 
     def _get_packages(self, node_processes):
         result = []
diff --git a/sahara/plugins/mapr/resources/add_security_repos.sh b/sahara/plugins/mapr/resources/add_security_repos.sh
index 78be7812..36f4e73e 100644
--- a/sahara/plugins/mapr/resources/add_security_repos.sh
+++ b/sahara/plugins/mapr/resources/add_security_repos.sh
@@ -4,3 +4,4 @@ cat >> /etc/apt/sources.list.d/security_repo.list << EOF
 deb http://security.ubuntu.com/ubuntu precise-security main
 deb http://security.ubuntu.com/ubuntu lucid-security main
 EOF
+apt-get update