diff --git a/spyderlib/utils/introspection/fallback_plugin.py b/spyderlib/utils/introspection/fallback_plugin.py
index cd8efecf4a6..d57669d448b 100644
--- a/spyderlib/utils/introspection/fallback_plugin.py
+++ b/spyderlib/utils/introspection/fallback_plugin.py
@@ -75,6 +75,8 @@ def get_definition(self, info):
         filename = info.filename
 
         line_nr = None
+        if token is None:
+            return
         if '.' in token:
             token = token.split('.')[-1]