diff --git a/src/biomappings/upload_ndex.py b/src/biomappings/upload_ndex.py
index dee8991c..36295876 100644
--- a/src/biomappings/upload_ndex.py
+++ b/src/biomappings/upload_ndex.py
@@ -31,7 +31,8 @@ def ndex(username, password):
     cx = NiceCXBuilder()
     cx.set_name("Biomappings")
     cx.add_network_attribute(
-        "description", "Manually curated semantic mappings (e.g., skos:exactMatch) between biological entities."
+        "description",
+        "Manually curated semantic mappings (e.g., skos:exactMatch) between biological entities.",
     )
     cx.add_network_attribute("reference", "https://github.com/biomappings/biomappings")
     cx.add_network_attribute("rights", "Waiver-No rights reserved (CC0)")