diff --git a/tailbone/views/reports.py b/tailbone/views/reports.py
index 4c8fe6e9..6359c471 100644
--- a/tailbone/views/reports.py
+++ b/tailbone/views/reports.py
@@ -281,7 +281,7 @@ class ReportOutputView(ExportMasterView):
 
             report = kwargs['instance']
             params_data = []
-            for name, value in report.params.items():
+            for name, value in (report.params or {}).items():
                 params_data.append({
                     'key': name,
                     'value': value,