diff --git a/tests/end_to_end/conftest.py b/tests/end_to_end/conftest.py
index 07e2f794..65dceec3 100644
--- a/tests/end_to_end/conftest.py
+++ b/tests/end_to_end/conftest.py
@@ -213,6 +213,7 @@ def git_repo(cd, git, action_ref, code_path):
                 file.read_text()
                 .replace("__ACTION_REF__", action_ref)
                 .replace("__ACTION_COVERAGE_PATH__", str(code_path))
+                .replace("__ACTION_SUBPROJECT_ID__", str(subproject_id))
             )
             file.write_text(content)
 
@@ -239,6 +240,12 @@ def code_path(request):
     return pathlib.Path(*mark.args) if mark else pathlib.Path(".")
 
 
+@pytest.fixture
+def subproject_id(request):
+    mark = request.node.get_closest_marker("subproject_id")
+    return mark.args[0] if mark else None
+
+
 @pytest.fixture
 def repo_full_name(repo_name, gh_me_username):
     return f"{gh_me_username}/{repo_name}"
diff --git a/tests/end_to_end/repo/.github/workflows/ci.yml b/tests/end_to_end/repo/.github/workflows/ci.yml
index 5d64e222..49b95415 100644
--- a/tests/end_to_end/repo/.github/workflows/ci.yml
+++ b/tests/end_to_end/repo/.github/workflows/ci.yml
@@ -41,6 +41,7 @@ jobs:
           ANNOTATE_MISSING_LINES: true
           ANNOTATION_TYPE: notice
           COVERAGE_PATH: __ACTION_COVERAGE_PATH__
+          SUBPROJECT_ID: __ACTION_SUBPROJECT_ID__
 
       - name: Store Pull Request comment to be posted
         uses: actions/upload-artifact@v3
diff --git a/tests/end_to_end/repo/.github/workflows/coverage-comment.yml b/tests/end_to_end/repo/.github/workflows/coverage-comment.yml
index 9db6642d..26668d71 100644
--- a/tests/end_to_end/repo/.github/workflows/coverage-comment.yml
+++ b/tests/end_to_end/repo/.github/workflows/coverage-comment.yml
@@ -22,3 +22,4 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           GITHUB_PR_RUN_ID: ${{ github.event.workflow_run.id }}
           COVERAGE_PATH: __ACTION_COVERAGE_PATH__
+          SUBPROJECT_ID: __ACTION_SUBPROJECT_ID__
diff --git a/tests/end_to_end/test_all.py b/tests/end_to_end/test_all.py
index 4b445295..7648362d 100644
--- a/tests/end_to_end/test_all.py
+++ b/tests/end_to_end/test_all.py
@@ -6,6 +6,7 @@
 
 @pytest.mark.repo_suffix("public")
 @pytest.mark.code_path("subdir")
+@pytest.mark.subproject_id("my-great-project")
 def test_public_repo(
     gh_create_repo,
     wait_for_run_to_start,
@@ -124,6 +125,11 @@ def test_public_repo(
         fail_value="\n",
     )
     assert ":arrow_up:" in comment
+    assert "## Coverage report (my-great-project)" in comment
+    assert (
+        "This comment was produced by python-coverage-comment-action (my-great-project)"
+        in comment
+    )
 
     # Let's merge the PR and see if everything works fine
     gh_me("pr", "merge", "1", "--merge")