diff --git a/src/c3nav/mapdata/render/svg.py b/src/c3nav/mapdata/render/svg.py
index 2744307e..d185de94 100644
--- a/src/c3nav/mapdata/render/svg.py
+++ b/src/c3nav/mapdata/render/svg.py
@@ -83,6 +83,8 @@ class SVGImage:
     def add_geometry(self, geometry=None, fill_color=None, fill_opacity=None, opacity=None, filter=None,
                      stroke_width=0.0, stroke_color=None, stroke_opacity=None, stroke_linejoin=None, clip_path=None):
         if geometry is not None:
+            if not geometry:
+                return
             if isinstance(geometry, str):
                 element = ET.Element('use', {'xlink:href': '#'+geometry})
             else: