diff --git a/kyu_2/evaluate_mathematical_expression/evaluate.py b/kyu_2/evaluate_mathematical_expression/evaluate.py
index 87ee10e9781..dd4160ac220 100644
--- a/kyu_2/evaluate_mathematical_expression/evaluate.py
+++ b/kyu_2/evaluate_mathematical_expression/evaluate.py
@@ -154,7 +154,7 @@ def calc(string: str) -> float:
     string = ' '.join(strings)
 
     string = ''.join(string.split('+'))
-    strings: list = string.split()
+    strings = string.split()
     string = process_brackets(strings)
     string = process_duplicate_minus(string)
     string = process_math_expression(string, ['*', '/'])