diff --git a/contrib/pyln-client/tests/test_gossmap.py b/contrib/pyln-client/tests/test_gossmap.py
index ce2f46d70602..63e05b982acc 100644
--- a/contrib/pyln-client/tests/test_gossmap.py
+++ b/contrib/pyln-client/tests/test_gossmap.py
@@ -36,3 +36,9 @@ def test_gossmap(tmp_path):
     g2 = Gossmap(sfile)
     assert set(g.channels.keys()) == set(g2.channels.keys())
     assert set(g.nodes.keys()) == set(g2.nodes.keys())
+
+    # Check some details
+    channel1 = g.get_channel("632677x1635x1")
+    channel2 = g.get_channel("632675x1524x0")
+    assert channel1.satoshis == 348185
+    assert channel2.satoshis == 31337