diff --git a/docs/gallery_code/oceanography/plot_atlantic_profiles.py b/docs/gallery_code/oceanography/plot_atlantic_profiles.py
index dc038ecffe..6604b61ec3 100644
--- a/docs/gallery_code/oceanography/plot_atlantic_profiles.py
+++ b/docs/gallery_code/oceanography/plot_atlantic_profiles.py
@@ -34,7 +34,7 @@ def main():
     # the southern portion of the domain, and limit the depth of the profile
     # to 1000m.
     lon_cons = iris.Constraint(longitude=330.5)
-    lat_cons = iris.Constraint(latitude=lambda l: -10 < l < -9)
+    lat_cons = iris.Constraint(latitude=lambda lat: -10 < lat < -9)
     depth_cons = iris.Constraint(depth=lambda d: d <= 1000)
     theta_1000m = theta.extract(depth_cons & lon_cons & lat_cons)
     salinity_1000m = salinity.extract(depth_cons & lon_cons & lat_cons)