diff --git a/.github/workflows/debuild.yml b/.github/workflows/debuild.yml
index dce825ca..ad056d65 100644
--- a/.github/workflows/debuild.yml
+++ b/.github/workflows/debuild.yml
@@ -27,6 +27,9 @@ jobs:
       - name: Set env
         # Here we are setting a variable from an expression.
         run: echo "TAG_NAME=${GITHUB_REF##*/}" >> $GITHUB_ENV
+      - name: Set timezone
+        # Needed for TEST(mock_MeterOMS, first_packets)
+        run: timedatectl set-timezone "Europe/Berlin"
       - name: add cloudsmith repo
         run: |
           LISTENTRY="deb [signed-by=$KEYFILE] $CLOUDURL/debian trixie main"
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7e6f0353..7eb39deb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,8 +20,6 @@ set(VERSION_DATE "2018-08-04")
 set(PACKAGE_STRING "${PROJECT_NAME} ${VZLOGGER_RPM_VERSION}")
 set(VERSION "${VZLOGGER_RPM_VERSION}")
 set(CMAKE_VERBOSE_MAKEFILE 1)
-# Needed for TEST(mock_MeterOMS, first_packets)
-set(ENV{TZ} "Europe/Berlin")
 
 # debug build, on by default
 ADD_DEFINITIONS(-g3)