diff --git a/weasyprint/tests/test_api.py b/weasyprint/tests/test_api.py
index 69adb128..b1dd2073 100644
--- a/weasyprint/tests/test_api.py
+++ b/weasyprint/tests/test_api.py
@@ -972,7 +972,7 @@ def test_html_meta():
             <meta name=dummy>
             <meta content=ignored>
             <meta>
-            <meta name=keywords content="html ,	css,
+            <meta name=keywords content="html ,\tcss,
                                          pdf,css">
             <meta name=dcterms.created content=2011-04>
             <meta name=dcterms.created content=2011-05>
diff --git a/weasyprint/tests/test_pdf.py b/weasyprint/tests/test_pdf.py
index c1f7de49..51ec8f46 100644
--- a/weasyprint/tests/test_pdf.py
+++ b/weasyprint/tests/test_pdf.py
@@ -371,7 +371,7 @@ def test_document_info():
         <title>Test document</title>
         <h1>Another title</h1>
         <meta name=generator content="Human after all">
-        <meta name=keywords content="html ,	css,
+        <meta name=keywords content="html ,\tcss,
                                      pdf,css">
         <meta name=description content="Blah… ">
         <meta name=dcterms.created content=2011-04>
diff --git a/weasyprint/tests/test_presentational_hints.py b/weasyprint/tests/test_presentational_hints.py
index 5bd35f34..8c3df275 100644
--- a/weasyprint/tests/test_presentational_hints.py
+++ b/weasyprint/tests/test_presentational_hints.py
@@ -15,7 +15,6 @@ from __future__ import division, unicode_literals
 from .. import CSS, HTML
 from .testing_utils import assert_no_logs
 
-
 PH_TESTING_CSS = CSS(string='''
 @page {margin: 0; size: 1000px 1000px}
 body {margin: 0}