diff --git a/python-stdlib/unittest/tests/test_exception.py b/python-stdlib/unittest/tests/exception.py
similarity index 66%
rename from python-stdlib/unittest/tests/test_exception.py
rename to python-stdlib/unittest/tests/exception.py
index 470ffdcc..0e828e22 100644
--- a/python-stdlib/unittest/tests/test_exception.py
+++ b/python-stdlib/unittest/tests/exception.py
@@ -1,3 +1,5 @@
+# This makes unittest return an error code, so is not named "test_xxx.py".
+
 import unittest
 
 
diff --git a/tools/ci.sh b/tools/ci.sh
index 07b27d13..a5fcdf22 100755
--- a/tools/ci.sh
+++ b/tools/ci.sh
@@ -63,6 +63,7 @@ function ci_package_tests_run {
         python-stdlib/os-path/test_path.py \
         python-stdlib/pickle/test_pickle.py \
         python-stdlib/string/test_translate.py \
+        python-stdlib/unittest/tests/exception.py \
         unix-ffi/gettext/test_gettext.py \
         unix-ffi/pwd/test_getpwnam.py \
         unix-ffi/re/test_re.py \
@@ -90,6 +91,7 @@ function ci_package_tests_run {
         python-stdlib/shutil \
         python-stdlib/tempfile \
         python-stdlib/time \
+        python-stdlib/unittest/tests \
         python-stdlib/unittest-discover/tests \
         ; do
         (cd $path && $MICROPYTHON -m unittest)