diff --git a/parsl/launchers/launchers.py b/parsl/launchers/launchers.py
index <HASH>..<HASH> 100644
--- a/parsl/launchers/launchers.py
+++ b/parsl/launchers/launchers.py
@@ -298,7 +298,7 @@ class AprunLauncher(Launcher):
         ----------
 
         options: str
-             This string will be passed to the aprun launcher. Default: None
+             This string will be passed to the aprun launcher. Default: ''
         """
         self.overrides = overrides
make Aprun default comment consistent with other launchers