diff --git a/src/utils.py b/src/utils.py
index 54b964d..4693ad3 100644
--- a/src/utils.py
+++ b/src/utils.py
@@ -1,4 +1,2 @@
-import os  # unused import — LINTING bug on line 1
-
 def add(a, b):
-    return a + b
\ No newline at end of file
+    return a + b
diff --git a/src/validator.py b/src/validator.py
index 3df204f..341c0ff 100644
--- a/src/validator.py
+++ b/src/validator.py
@@ -1,2 +1,2 @@
-def validate(x)  # missing colon — SYNTAX bug on line 1
-    return x > 0
\ No newline at end of file
+def validate(x):
+    return x > 0
diff --git a/tests/test_utils.py b/tests/test_utils.py
index db0a721..1919a9b 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -1,79 +1,60 @@
-import os
-import sys
-import json
-import math
-import random
-
-# ─── Bug 1: LINTING — unused imports (os, sys, json, random) ─────────────────
-
-# ─── Bug 2: INDENTATION error ────────────────────────────────────────────────
-def calculate_area(length, width):
-    area = length * width
-      return area
-
-
-# ─── Bug 3: SYNTAX error — missing colon ─────────────────────────────────────
-def is_even(number)
-    return number % 2 == 0
-
-
-# ─── Bug 4: TYPE_ERROR — string + int ────────────────────────────────────────
-def greet_user(name):
-    age = 25
-    message = "Hello " + name + " you are " + age + " years old"
-    return message
-
-
-# ─── Bug 5: LOGIC error — wrong operator ─────────────────────────────────────
-def is_positive(number):
-    if number < 0:          # should be > 0
-        return True
-    return False
-
-
-# ─── Bug 6: IMPORT error — wrong module name ─────────────────────────────────
-from collections import OrderedDikt   # typo: should be OrderedDict
-
-
-# ─── Bug 7: LOGIC error — off-by-one in loop ─────────────────────────────────
-def sum_list(numbers):
-    total = 0
-    for i in range(len(numbers) + 1):   # should be range(len(numbers))
-        total += numbers[i]
-    return total
-
-
-# ─── Bug 8: SYNTAX error — missing closing bracket ───────────────────────────
-def get_square_roots(numbers):
-    return [math.sqrt(n) for n in numbers
-
-
-# ─── Bug 9: TYPE_ERROR — wrong type comparison ───────────────────────────────
-def count_above_threshold(numbers, threshold):
-    count = 0
-    for n in numbers:
-        if n > "threshold":    # comparing int to string literal
-            count += 1
-    return count
-
-
-# ─── Bug 10: LOGIC error — returns wrong value ───────────────────────────────
-def fahrenheit_to_celsius(f):
-    return (f + 32) * 5 / 9   # should be (f - 32) * 5 / 9
-
-
-# ─── Bug 11: INDENTATION error inside if block ───────────────────────────────
-def classify_number(n):
-    if n > 0:
-        label = "positive"
-    elif n < 0:
-            label = "negative"   # wrong indentation
-    else:
-        label = "zero"
-    return label
-
-
-# ─── Bug 12: LINTING — variable defined but never used ───────────────────────
-def multiply(a, b):
-    unused_variable = 42
-    return a * b
+import math
+from collections import OrderedDict
+
+
+def calculate_area(length, width):
+    area = length * width
+    return area
+
+
+def is_even(number):
+    return number % 2 == 0
+
+
+def greet_user(name):
+    age = 25
+    message = "Hello " + name + " you are " + str(age) + " years old"
+    return message
+
+
+def is_positive(number):
+    if number > 0:
+        return True
+    return False
+
+
+def sum_list(numbers):
+    total = 0
+    for i in range(len(numbers)):
+        total += numbers[i]
+    return total
+
+
+def get_square_roots(numbers):
+    return [math.sqrt(n) for n in numbers]
+
+
+def count_above_threshold(numbers, threshold):
+    count = 0
+    for n in numbers:
+        if n > threshold:
+            count += 1
+    return count
+
+
+def fahrenheit_to_celsius(f):
+    return (f - 32) * 5 / 9
+
+
+def classify_number(n):
+    if n > 0:
+        label = "positive"
+    elif n < 0:
+        label = "negative"
+    else:
+        label = "zero"
+    return label
+
+
+def multiply(a, b):
+    return a * b