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-rw-r--r--ranger/core/actions.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/ranger/core/actions.py b/ranger/core/actions.py
index 9a132a42..2bcfd72c 100644
--- a/ranger/core/actions.py
+++ b/ranger/core/actions.py
@@ -112,7 +112,7 @@ class Actions(FileManagerAware, EnvironmentAware, SettingsAware):
 			except Exception as error:
 				self.notify(error)
 
-	def substitute_macros(self, string, additional):
+	def substitute_macros(self, string, additional=dict()):
 		return _MacroTemplate(string).safe_substitute(self._get_macros(),
 				**additional)