diff --git a/common/converters.py b/common/converters.py
index c46cdaa9219e8c8f568ba85a2731bdc2b0d2082d..dc27550c1a4b322d8f07fe00e5f3387ef2a94352 100644
--- a/common/converters.py
+++ b/common/converters.py
@@ -25,7 +25,7 @@ from .. import properties
 # return data.astype(self.dtype, casting = 'safe')
 # safe casting specifies, otherwise converts np.nan to some real number depending on dtype.
 
-    
+
 
 class df_converters():
     def __init__(self, dtype):
@@ -43,7 +43,7 @@ class df_converters():
         except:
             return data
 
-    def object_to_object(self,data,missing_value = None,disable_white_strip = False):
+    def object_to_object(self,data,disable_white_strip = False):
         # With strip() an empty element after stripping, is just an empty element, no NaN...
         if not disable_white_strip:
             return data.str.strip()
@@ -65,4 +65,4 @@ for dtype in properties.numeric_types:
 converters['datetime'] = df_converters('datetime').object_to_datetime
 converters['str'] = df_converters('str').object_to_object
 converters['object'] = df_converters('object').object_to_object
-converters['key'] = df_converters('key').object_to_object
\ No newline at end of file
+converters['key'] = df_converters('key').object_to_object