diff --git a/tests/integration/features/conftest.py b/tests/integration/features/conftest.py
index 48340bd98..060bb00dd 100644
--- a/tests/integration/features/conftest.py
+++ b/tests/integration/features/conftest.py
@@ -419,7 +419,7 @@ def clipboard_contains(quteproc, httpbin, what, content):
 
 @bdd.then(bdd.parsers.parse('the clipboard should contain:\n{content}'))
 def clipboard_contains_multiline(quteproc, httpbin, content):
-    expected = textwrap.dedent(content).replace('(port)', httpbin.port)
+    expected = textwrap.dedent(content).replace('(port)', str(httpbin.port))
     quteproc.wait_for(message='Setting fake clipboard: {}'.format(
         json.dumps(expected)))