diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index ab32197..31affa0 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -92,8 +92,8 @@ jobs:
       - name: Add plugin
         run: calibre-customize -a worddumb.zip
 
-      - name: Get calibre python version
-        run: echo "CALIBRE_PY=$(calibre-debug -c 'import platform; print(".".join(platform.python_version_tuple()[:2]))')" >> $GITHUB_ENV
+      - name: Get python version
+        run: echo "CALIBRE_PY=$(python3 -c 'import platform; print(".".join(platform.python_version_tuple()[:2]))')" >> $GITHUB_ENV
 
       - name: Restore dependencies and Wikipedia cache
         uses: actions/cache@v2
diff --git a/README.md b/README.md
index ec02aa9..2fa042d 100644
--- a/README.md
+++ b/README.md
@@ -55,7 +55,7 @@ Please read [CONTRIBUTING](./docs/CONTRIBUTING.md).
   - macOS
 
   ```
-  // install from HomeBrew(recommanded)
+  // install from Homebrew(recommanded)
   $ brew install python
 
   // or install Apple Command Line Tools