diff --git a/workflow/applications/gfs_cycled.py b/workflow/applications/gfs_cycled.py
index 27f6403547..790650816f 100644
--- a/workflow/applications/gfs_cycled.py
+++ b/workflow/applications/gfs_cycled.py
@@ -25,7 +25,7 @@ def __init__(self, conf: Configuration):
 
         # Now construct self.runs the desired XML order (gfs, enkfgfs, gdas, enkfgdas)
         self.runs = []
-        self.runs.append ["gfs"]  if base['INTERVAL_GFS'] > 0 else 0  
+        self.runs.append ("gfs")  if base['INTERVAL_GFS'] > 0 else 0  
         self.runs.append('enkfgfs') if 'gfs' in self.ens_runs and "gfs" in self.runs else 0
         self.runs.append("gdas")  # We always have a 'gdas' run
         self.runs.append('enkfgdas') if 'gdas' in self.ens_runs else 0