diff --git a/.github/workflows/cpp_ubuntu20_04.yml b/.github/workflows/cpp_ubuntu20_04.yml
index e7c738a..8b9f0ba 100644
--- a/.github/workflows/cpp_ubuntu20_04.yml
+++ b/.github/workflows/cpp_ubuntu20_04.yml
@@ -12,8 +12,8 @@ jobs:
       matrix:
         rosdistro: ['noetic']
         gcc: ['8', '9', '10']
-    container: ros:${{ matrix.config.rosdistro }}-ros-base-focal
-    name: ROS ${{ matrix.config.rosdistro }} - GCC ${{ matrix.config.gcc }}
+    container: ros:${{ matrix.rosdistro }}-ros-base-focal
+    name: ROS ${{ matrix.rosdistro }} - GCC ${{ matrix.gcc }}
     steps:
     - uses: actions/checkout@v3
       name: Checkout lpp
@@ -25,8 +25,8 @@ jobs:
     - name: Install newest git version
       run: sudo apt update && sudo apt-get install -y software-properties-common && sudo add-apt-repository -y ppa:git-core/ppa && sudo apt-get update && sudo apt-get install -y git
 
-    - name: Install GCC version ${{ matrix.config.gcc}}
-      run: sudo add-apt-repository ppa:ubuntu-toolchain-r/ppa -y && sudo apt update && sudo apt install -y gcc-${{ matrix.config.gcc}} g++-${{ matrix.config.gcc}} && sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-${{ matrix.config.gcc}} 100 --slave /usr/bin/g++ g++ /usr/bin/g++-${{ matrix.config.gcc}}
+    - name: Install GCC version ${{ matrix.gcc }}
+      run: sudo add-apt-repository ppa:ubuntu-toolchain-r/ppa -y && sudo apt update && sudo apt install -y gcc-${{ matrix.gcc }} g++-${{ matrix.gcc }} && sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-${{ matrix.gcc }} 100 --slave /usr/bin/g++ g++ /usr/bin/g++-${{ matrix.gcc }}
 
     - name: Install catkin tools
       run: sudo apt install -y python3-rosdep python3-rosinstall python3-rosinstall-generator python3-wstool build-essential python3-catkin-tools
@@ -35,11 +35,11 @@ jobs:
       run: sudo apt install -y libgoogle-glog-dev
 
     - name: Build lpp
-      run: source /opt/ros/${{ matrix.config.rosdistro }}/setup.bash && catkin build lpp && source ${GITHUB_WORKSPACE}/catkin_ws/devel/setup.bash
+      run: source /opt/ros/${{ matrix.rosdistro }}/setup.bash && catkin build lpp && source ${GITHUB_WORKSPACE}/catkin_ws/devel/setup.bash
       working-directory: catkin_ws
       shell: bash
 
     - name: Run unittests
-      run: source /opt/ros/${{ matrix.config.rosdistro }}/setup.bash && source ${GITHUB_WORKSPACE}/catkin_ws/devel/setup.bash && rosrun lpp test_lpp && rosrun lpp test_glog && rosrun lpp test_lpp_custom && rosrun lpp test_nolog && rosrun lpp test_default && rosrun lpp test_roslog
+      run: source /opt/ros/${{ matrix.rosdistro }}/setup.bash && source ${GITHUB_WORKSPACE}/catkin_ws/devel/setup.bash && rosrun lpp test_lpp && rosrun lpp test_glog && rosrun lpp test_lpp_custom && rosrun lpp test_nolog && rosrun lpp test_default && rosrun lpp test_roslog
       working-directory: catkin_ws
       shell: bash