diff --git a/.stestr.conf b/.stestr.conf
index a04547d97e..5a024284a2 100644
--- a/.stestr.conf
+++ b/.stestr.conf
@@ -1,4 +1,4 @@
 [DEFAULT]
-test_path=${TEST_PATH:-./glance/tests/unit}
+test_path=${OS_TEST_PATH:-./glance/tests/unit}
 top_dir=./
 group_regex=(glance\.tests\.functional\.serial\.[^.]+\.)