diff --git a/conversions/octal_to_binary.py b/conversions/octal_to_binary.py
index 48075b8df..385704175 100644
--- a/conversions/octal_to_binary.py
+++ b/conversions/octal_to_binary.py
@@ -14,7 +14,7 @@ def octal_to_binary(octal_number):
     for digit in octal_number:
         if digit not in octal_digits:
             raise ValueError("Invalid octal digit")
-        
+
         binary_digit = ""
         value = int(digit)
         for _ in range(3):
@@ -24,6 +24,8 @@ def octal_to_binary(octal_number):
 
     return binary_number
 
+
 if __name__ == "__main__":
     import doctest
-    doctest.testmod()
\ No newline at end of file
+
+    doctest.testmod()