diff --git a/.github/workflows/build_themes.yml b/.github/workflows/build_themes.yml
index 01cb06894b..5310a433e6 100644
--- a/.github/workflows/build_themes.yml
+++ b/.github/workflows/build_themes.yml
@@ -42,9 +42,10 @@ jobs:
         run: |
           git fetch origin test
           git diff --name-only origin/test...HEAD \
-            | grep -E '^($THEME_BASES)' \
+            | grep -E '^(packages/modules/web_themes/koala/source)' \
             | awk -F/ '{print $4}' | sort -u > changed_themes.txt
           cat changed_themes.txt
+          echo "::set-output name=changed_themes::$(cat changed_themes.txt | tr '\n' ',')"
 
       - name: Installiere Abhängigkeiten und baue geänderte Themes
         run: |
diff --git a/packages/modules/web_themes/koala/source/README.md b/packages/modules/web_themes/koala/source/README.md
index 60de9cda9d..04a4cf5032 100644
--- a/packages/modules/web_themes/koala/source/README.md
+++ b/packages/modules/web_themes/koala/source/README.md
@@ -4,6 +4,8 @@ Koala web theme for openWB
 
 
 
+
+
 ## Install the dependencies
 
 ```bash