diff --git a/.github/workflows/daemon-checks.yml b/.github/workflows/daemon-checks.yml
index 023f5165..21dd95dc 100644
--- a/.github/workflows/daemon-checks.yml
+++ b/.github/workflows/daemon-checks.yml
@@ -17,6 +17,8 @@ jobs:
           pip install pipenv
           cd daemon
           cp setup.py.in setup.py
+          cp core/constants.py.in core/constants.py
+          sed -i 's/True/False/g' core/constants.py
           pipenv install --dev
       - name: isort
         run: |
@@ -30,3 +32,11 @@ jobs:
         run: |
           cd daemon
           pipenv run flake8
+      - name: grpc
+        run: |
+          cd daemon/proto
+          pipenv run python -m grpc_tools.protoc -I . --python_out=.. --grpc_python_out=.. core/api/grpc/core.proto
+      - name: test
+        run: |
+          cd daemon
+          pipenv run test --mock
diff --git a/daemon/core/api/tlv/corehandlers.py b/daemon/core/api/tlv/corehandlers.py
index e66d6875..321306a2 100644
--- a/daemon/core/api/tlv/corehandlers.py
+++ b/daemon/core/api/tlv/corehandlers.py
@@ -123,7 +123,7 @@ class CoreHandler(socketserver.BaseRequestHandler):
         for thread in self.handler_threads:
             logging.info("waiting for thread: %s", thread.getName())
             thread.join(timeout)
-            if thread.isAlive():
+            if thread.is_alive():
                 logging.warning(
                     "joining %s failed: still alive after %s sec",
                     thread.getName(),