diff --git a/src/utils/openmc/trigger.py b/src/utils/openmc/trigger.py
index 8f14800973..f2504cb92f 100644
--- a/src/utils/openmc/trigger.py
+++ b/src/utils/openmc/trigger.py
@@ -26,7 +26,7 @@ class Trigger(object):
 
             clone._scores = []
             for score in self._scores:
-              clone.add_score(score)
+                clone.add_score(score)
 
             memo[id(self)] = clone
 
@@ -111,4 +111,4 @@ class Trigger(object):
                 scores += '{0} '.format(score)
 
             scores.rstrip(' ')
-            subelement.set("scores", scores)
\ No newline at end of file
+            subelement.set("scores", scores)