diff --git a/tests/test_compatibility.py b/tests/test_compatibility.py
index b2fff2f9..54459644 100644
--- a/tests/test_compatibility.py
+++ b/tests/test_compatibility.py
@@ -14,12 +14,12 @@ def test_compatibility_checker(data_dir, caplog):
 
     CompatibilityChecker([s.font for s in designspace.sources]).check()
     assert "differing number of contours in glyph A" in caplog.text
-    assert "Incompatible Sans Regular had 2" in caplog.text
+    assert "Incompatible Sans Regular had: 2" in caplog.text
 
     assert "differing number of points in glyph B, contour 0" in caplog.text
 
     assert "differing anchors in glyph A" in caplog.text
-    assert 'Incompatible Sans Bold had "foo"' in caplog.text
+    assert 'Incompatible Sans Bold had: "foo"' in caplog.text
 
     assert "Fonts had differing number of components in glyph C" in caplog.text