diff --git a/tupak/result.py b/tupak/result.py
index afd7cfda30a1fabf860d3d686a2eb1568ca99def..d5da239e248b40c91b85fe88bc4d3e7ebd85c195 100644
--- a/tupak/result.py
+++ b/tupak/result.py
@@ -154,7 +154,7 @@ class Result(dict):
             kwargs['truths'] = kwargs.pop('truth')
 
         if getattr(self, 'injection_parameters', None) is not None:
-            injection_parameters = [self.injection_parameters[key]
+            injection_parameters = [self.injection_parameters.get(key, None)
                                     for key in self.search_parameter_keys]
             kwargs['truths'] = kwargs.get('truths', injection_parameters)