diff --git a/tests/avatar/driver/barfoo.php b/tests/avatar/driver/barfoo.php
index 11c100db36..0bf30b8a91 100644
--- a/tests/avatar/driver/barfoo.php
+++ b/tests/avatar/driver/barfoo.php
@@ -18,4 +18,9 @@ class barfoo extends \phpbb\avatar\driver\driver
 	{
 		return false;
 	}
+
+	public function get_template_name()
+	{
+		return 'barfoo.html';
+	}
 }
diff --git a/tests/avatar/driver/foobar.php b/tests/avatar/driver/foobar.php
index a1e7bdf7cc..aabdaf5ac4 100644
--- a/tests/avatar/driver/foobar.php
+++ b/tests/avatar/driver/foobar.php
@@ -18,4 +18,9 @@ class foobar extends \phpbb\avatar\driver\driver
 	{
 		return false;
 	}
+
+	public function get_template_name()
+	{
+		return 'foobar.html';
+	}
 }