diff --git a/lib/iris/coord_systems.py b/lib/iris/coord_systems.py
index 51a95f4506..651067dd46 100644
--- a/lib/iris/coord_systems.py
+++ b/lib/iris/coord_systems.py
@@ -1,4 +1,4 @@
-# (C) British Crown Copyright 2010 - 2016, Met Office
+# (C) British Crown Copyright 2010 - 2018, Met Office
 #
 # This file is part of Iris.
 #
@@ -719,7 +719,7 @@ def as_cartopy_crs(self):
         return ccrs.Stereographic(
             self.central_lat, self.central_lon,
             self.false_easting, self.false_northing,
-            self.true_scale_lat, globe)
+            self.true_scale_lat, globe=globe)
 
     def as_cartopy_projection(self):
         return self.as_cartopy_crs()