diff --git a/.github/actions/nimbus-build-system/action.yml b/.github/actions/nimbus-build-system/action.yml
index d22724c8..66a182cd 100644
--- a/.github/actions/nimbus-build-system/action.yml
+++ b/.github/actions/nimbus-build-system/action.yml
@@ -84,7 +84,7 @@ runs:
 
     - name: Install gcc 14 on Linux
       # We don't want to install gcc 14 for coverage (Ubuntu 20.04)
-      if : ${{ inputs.os == 'linux' && !inputs.coverage }}
+      if: ${{ inputs.os == 'linux' && inputs.coverage != 'true' }}
       shell: ${{ inputs.shell }} {0}
       run: |
         # Skip for older Ubuntu versions
@@ -210,7 +210,7 @@ runs:
     - name: Restore Nim toolchain binaries from cache
       id: nim-cache
       uses: actions/cache@v4
-      if : ${{ !inputs.coverage  }}
+      if: ${{ inputs.coverage != 'true' }}
       with:
         path: NimBinaries
         key: ${{ inputs.os }}-${{ inputs.cpu }}-nim-${{ inputs.nim_version }}-cache-${{ env.cache_nonce }}-${{ github.run_id }}