diff --git a/beat/web/plotters/views.py b/beat/web/plotters/views.py
index 2bf1c23623e060130f1fc72e89c6c66cd24d64d7..bb718683fc7d7c5cb5ada0c3bedb4afe590356ce 100644
--- a/beat/web/plotters/views.py
+++ b/beat/web/plotters/views.py
@@ -99,7 +99,7 @@ def plot(request):
 
     report_experiments = None
 
-    if use.has_key("report_number"):
+    if "report_number" in use:
         try:
             report = Report.objects.get(number = int(use["report_number"]))
         except: