diff --git a/.stestr.conf b/.stestr.conf
index fef4726f..d39e3c13 100644
--- a/.stestr.conf
+++ b/.stestr.conf
@@ -1,4 +1,4 @@
 [DEFAULT]
-test_path=${OS_TEST_PATH}
+test_path=${OS_TEST_PATH:-./ovsdbapp/tests/unit}
 top_dir=./
 group_regex=([^\.]+\.)+
diff --git a/tox.ini b/tox.ini
index 8af237a6..15106a17 100644
--- a/tox.ini
+++ b/tox.ini
@@ -9,7 +9,6 @@ usedevelop = True
 setenv =
    VIRTUAL_ENV={envdir}
    PYTHONWARNINGS=default::DeprecationWarning
-   OS_TEST_PATH=./ovsdbapp/tests/unit
    OS_LOG_CAPTURE={env:OS_LOG_CAPTURE:true}
    OS_STDOUT_CAPTURE={env:OS_STDOUT_CAPTURE:true}
    OS_STDERR_CAPTURE={env:OS_STDERR_CAPTURE:true}