diff --git a/.github/workflows/matrix.yml b/.github/workflows/matrix.yml
index 69886bc4f9fc..a53a74a6a133 100644
--- a/.github/workflows/matrix.yml
+++ b/.github/workflows/matrix.yml
@@ -210,7 +210,7 @@ jobs:
           ${{ matrix.c_compiler }} --version | grep -q -E "${{ matrix.grep_clang_version_rxp }}"
 
       - name: set up a mock GCC toolchain root for Clang (Ubuntu)
-        if: ${{ env.SKIP == 'false' && runner.os == 'Linux' && (matrix.compiler == 'clang++-14') }}
+        if: ${{ env.SKIP == 'false' && runner.os == 'Linux' && (matrix.cxx_compiler == 'clang++-14') }}
         run: |
           sudo mkdir /opt/mock-gcc-11
           sudo ln -s /usr/include /opt/mock-gcc-11/include