diff --git a/app/parsers/atomic_powershell.py b/app/parsers/atomic_powershell.py
index 54a4ec2b..55c11ae0 100644
--- a/app/parsers/atomic_powershell.py
+++ b/app/parsers/atomic_powershell.py
@@ -3,7 +3,7 @@
 
 
 class Parser(BaseParser):
-    checked_flags = list('FullyQualifiedErrorId')
+    checked_flags = ['FullyQualifiedErrorId']
 
     def parse(self, blob):
         for ex_line in self.line(blob):