diff --git a/.circleci/config.yml b/.circleci/config.yml
index 83832086..38ca0aff 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -11,8 +11,7 @@ jobs:
       - TESTLOG: /tmp/test.log
     steps:
       - checkout
-      - run: make all
-      - run: ulimit -c unlimited && make check
+      - run: ulimit -c unlimited && MDBX_BUILD_OPTIONS="-DNDEBUG=1 -DMDBX_FORCE_ASSERTIONS=1" make test-ubsan
       - run:
           command: |
             mkdir -p /tmp/artifacts