diff --git a/run_chain.py b/run_chain.py
index f54c6d3d..341a8c0a 100755
--- a/run_chain.py
+++ b/run_chain.py
@@ -195,8 +195,8 @@ def set_attributes_time(self):
         return self
 
     def set_attributes_int2lm(self):
-        self.inidate_int2lm_yyyymmddhh = (self.startdate +
-                                     timedelta(hours=self.hstart)).strftime('%Y%m%d%H')
+        self.inidate_int2lm_yyyymmddhh = (
+            self.startdate + timedelta(hours=self.hstart)).strftime('%Y%m%d%H')
         # int2lm processing always starts at hstart=0 and we modify inidate instead
         self.hstart_int2lm = 0
         self.hstop_int2lm = self.forecasttime