diff --git a/tests/generator_test.php b/tests/generator_test.php
index 88ceede34..a1530fc30 100644
--- a/tests/generator_test.php
+++ b/tests/generator_test.php
@@ -14,6 +14,7 @@
 // You should have received a copy of the GNU General Public License
 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
 
+namespace auth_saml2;
 
 /**
  * Unit tests for test data generator.