diff --git a/.github/workflows/osrm-backend.yml b/.github/workflows/osrm-backend.yml
index fa229b5da..d83046d0e 100644
--- a/.github/workflows/osrm-backend.yml
+++ b/.github/workflows/osrm-backend.yml
@@ -437,7 +437,6 @@ jobs:
       BUILD_SHARED_LIBS: ${{ matrix.BUILD_SHARED_LIBS }}
       CCOMPILER: ${{ matrix.CCOMPILER }}
       CFLAGS: ${{ matrix.CFLAGS }}
-      CLANG_VERSION: ${{ matrix.CLANG_VERSION }}
       CUCUMBER_TIMEOUT: ${{ matrix.CUCUMBER_TIMEOUT }}
       CXXCOMPILER: ${{ matrix.CXXCOMPILER }}
       CXXFLAGS: ${{ matrix.CXXFLAGS }}
@@ -545,7 +544,7 @@ jobs:
           sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y
           sudo apt-get update -y
           sudo apt-get install -y libbz2-dev libxml2-dev libzip-dev liblua5.2-dev libboost-all-dev
-          if [[ -z "${CLANG_VERSION}" ]]; then
+          if [[ "${CCOMPILER}" != clang-* ]]; then
             sudo apt-get install -y ${CXXCOMPILER}
           fi
           if [[ "${ENABLE_COVERAGE}" == "ON" ]]; then