diff --git a/library_generation/templates/owlbot.py.j2 b/library_generation/templates/owlbot.py.j2
index 84f070f35b..b3a7dee5a4 100644
--- a/library_generation/templates/owlbot.py.j2
+++ b/library_generation/templates/owlbot.py.j2
@@ -23,6 +23,6 @@ for library in s.get_staging_dirs():
 s.remove_staging_dirs()
 {% if should_include_templates %}java.common_templates(monorepo=True, {% if template_excludes %}excludes=[
 {%- for exclude in template_excludes %}
-    "{{ exclude }}",
+    "{{ exclude }}"{% if not loop.last %},{% endif %}
 {%- endfor %}
 ]{% endif %}){% endif %}
diff --git a/library_generation/test/resources/goldens/owlbot-golden.py b/library_generation/test/resources/goldens/owlbot-golden.py
index c2c142892a..2ba11e6bba 100644
--- a/library_generation/test/resources/goldens/owlbot-golden.py
+++ b/library_generation/test/resources/goldens/owlbot-golden.py
@@ -32,5 +32,5 @@
     "java.header",
     "license-checks.xml",
     "renovate.json",
-    ".gitignore",
+    ".gitignore"
 ])
\ No newline at end of file