diff --git a/.github/actions/test-python/action.yml b/.github/actions/test-python/action.yml
index bd53a08..053c970 100644
--- a/.github/actions/test-python/action.yml
+++ b/.github/actions/test-python/action.yml
@@ -109,7 +109,7 @@ runs:
         else
           coverage_arg=""
           if [ ${{ inputs.min-coverage }} -gt 0 ]; then
-            coverage_arg="--cov-fail-under=${{ inputs.min-coverage }}"
+            coverage_arg="--cov-fail-under="${{ inputs.min-coverage }}
           fi
           pytest --cov --cov-report html -n auto $coverage_arg
         fi
@@ -118,8 +118,11 @@ runs:
     - name: Get the coverage file.
       if: inputs.should-run-tests == 'yes' && inputs.upload-coverage == 'yes'
       run: |
+          coverage_prefix=''
+          if [ ${{ inputs.coverage-prefix }} != '' ]; then
+            coverage_prefix=${{ inputs.coverage-prefix }}-
+          fi
           coverage_branch=${${{ inputs.branch }}//+([\"\:<>|\*\?\\\/])/-}
-          coverage_prefix=${{ inputs.coverage-prefix != '' && "${{ inputs.coverage-prefix }}-" }}
           coverage_dir=${coverage_prefix}coverage-${coverage_branch}
           mkdir -p ${coverage_dir} && sudo cp -r coverage ${coverage_dir}