diff --git a/openedx_cmi5_xblock/openedx_cmi5_xblock.py b/openedx_cmi5_xblock/openedx_cmi5_xblock.py
index ebdd080..0428f68 100644
--- a/openedx_cmi5_xblock/openedx_cmi5_xblock.py
+++ b/openedx_cmi5_xblock/openedx_cmi5_xblock.py
@@ -561,7 +561,7 @@ def get_sha1(file_descriptor):
     def storage(self):
         """
         Return the storage backend used to store the assets of this xblock.
-        
+
         This is a cached property.
         """
         if not getattr(self, '_storage', None):
@@ -603,7 +603,7 @@ def workbench_scenarios():
 def parse_int(value, default):
     """
     Parses an integer.
-    
+
     returning the parsed value or a default if unsuccessful.
     """
     try:
@@ -615,7 +615,7 @@ def parse_int(value, default):
 def parse_float(value, default):
     """
     Parses a float.
-    
+
     Returning the parsed value or a default if unsuccessful.
     """
     try: