diff --git a/sleap/nn/tracking.py b/sleap/nn/tracking.py
index e38ce9d88..b6aae344b 100644
--- a/sleap/nn/tracking.py
+++ b/sleap/nn/tracking.py
@@ -1206,9 +1206,9 @@ def get_by_name_factory_options(cls):
 
         option = dict(name="of_window_size", default=21)
         option["type"] = int
-        option["help"] = (
-            "For optical-flow: Optical flow window size to consider at each pyramid "
-        )
+        option[
+            "help"
+        ] = "For optical-flow: Optical flow window size to consider at each pyramid "
         "scale level"
         options.append(option)