diff --git a/src/calibre/test_build.py b/src/calibre/test_build.py
index d504d748d6..adaca52206 100644
--- a/src/calibre/test_build.py
+++ b/src/calibre/test_build.py
@@ -397,6 +397,22 @@ class BuildTest(unittest.TestCase):
         except ImportError:
             from PIL import _imaging, _imagingft, _imagingmath
         _imaging, _imagingmath, _imagingft
+        from PIL import features
+        from io import StringIO
+        out = StringIO()
+        features.pilinfo(out=out, supported_formats=False)
+        out = out.getvalue()
+        for line in '''\
+        --- PIL CORE support ok
+        --- FREETYPE2 support ok
+        --- WEBP support ok
+        --- WEBP Transparency support ok
+        --- WEBPMUX support ok
+        --- WEBP Animation support ok
+        --- JPEG support ok
+        --- ZLIB (PNG/ZIP) support ok
+        '''.splitlines():
+            self.assertIn(line.strip(), out)
         i = Image.open(I('lt.png', allow_user_override=False))
         self.assertGreaterEqual(i.size, (20, 20))
         i = Image.open(P('catalog/DefaultCover.jpg', allow_user_override=False))