diff --git a/src/wrf/projection.py b/src/wrf/projection.py
index 029bfa3..d5b6670 100644
--- a/src/wrf/projection.py
+++ b/src/wrf/projection.py
@@ -791,7 +791,7 @@ class PolarStereographic(WrfProj):
         return _pyngl
     
     
-    def _basemap(self, **kwargs):
+    def _basemap(self, geobounds, **kwargs):
         if not basemap_enabled():
             return None