diff --git a/weasyprint/tests/test_layout/test_flex.py b/weasyprint/tests/test_layout/test_flex.py
index 5f6fbcd0d..df74d75af 100644
--- a/weasyprint/tests/test_layout/test_flex.py
+++ b/weasyprint/tests/test_layout/test_flex.py
@@ -361,3 +361,12 @@ def test_flex_auto_margin():
     page, = render_pages('<div style="display: flex; margin: auto">')
     page, = render_pages(
         '<div style="display: flex; flex-direction: column; margin: auto">')
+
+
+@assert_no_logs
+def test_flex_no_baseline():
+    # Regression test for https://github.com/Kozea/WeasyPrint/issues/765
+    page, = render_pages('''
+      <div class="references" style="display: flex; align-items: baseline;">
+        <div></div>
+      </div>''')