diff --git a/.github/workflows/build_openmpi_source.yml b/.github/workflows/build_openmpi_source.yml
index c4181323447..03833be41c7 100644
--- a/.github/workflows/build_openmpi_source.yml
+++ b/.github/workflows/build_openmpi_source.yml
@@ -53,7 +53,7 @@ jobs:
           key: ${{ runner.os }}-${{ runner.arch }}-gcc-openmpi-${{ steps.get-sha.outputs.sha }}-${{ inputs.build_mode }}
 
       - name: Install OpenMPI (GCC) (Release)
-        if: ${{ steps.cache-openmpi-ubuntu-gcc.cache-hit != 'true' && (inputs.build_mode = 'Release') }}
+        if: ${{ steps.cache-openmpi-ubuntu-gcc.cache-hit != 'true' && (inputs.build_mode == 'Release') }}
         run: |
           cd $GITHUB_WORKSPACE/ompi
           ./autogen.pl