diff --git a/a2/exercise_1.py b/a2/exercise_1.py
index b903957..eff7401 100644
--- a/a2/exercise_1.py
+++ b/a2/exercise_1.py
@@ -30,7 +30,7 @@ def status_code_breakdown(records):
     #counts = Counter(r["status_code"] for r in records if r["status_code"])
     counts = {}
     for r in records:
-        status = f"{r["status_code"][0]}xx"
+        status = f"{r['status_code'][0]}xx"
         counts[status] = counts.get(status, 0) + 1
     return counts
 
diff --git a/a2/exercise_2.py b/a2/exercise_2.py
index 87a2fbb..0045553 100644
--- a/a2/exercise_2.py
+++ b/a2/exercise_2.py
@@ -31,7 +31,7 @@ def suspicious_ips(records, treshold=3):
 def status_code_breakdown(records):
     counts = {}
     for request in records:
-        status = f"{request["status"][0]}xx"
+        status = f"{request['status'][0]}xx"
         counts[status] = counts.get(status, 0) + 1
     return counts
 
diff --git a/basic_math_recursion/task3/exercise_4.py b/basic_math_recursion/task3/exercise_4.py
index 7b805fe..d76c89b 100644
--- a/basic_math_recursion/task3/exercise_4.py
+++ b/basic_math_recursion/task3/exercise_4.py
@@ -1,6 +1,6 @@
 def main():
     num = int(input("Enter num> "))
-    print(fibonacci(num))
+    print(fibonaacci(num))
 
 def fibonaacci(num):
 
diff --git a/h1/exercise_1.py b/h1/exercise_1.py
index 350a047..c173149 100644
--- a/h1/exercise_1.py
+++ b/h1/exercise_1.py
@@ -13,7 +13,7 @@ def summarize_checks(checks, results=[]):
         status = parts[1]
         time = parts[2]
 
-        if status is "OK":
+        if status == "OK":
             healthy.append(server)
         else:
             unhealthy.append(server)
diff --git a/tests/test_build_fixes.py b/tests/test_build_fixes.py
new file mode 100644
index 0000000..c86db15
--- /dev/null
+++ b/tests/test_build_fixes.py
@@ -0,0 +1,21 @@
+import sys
+from pathlib import Path
+
+sys.path.insert(0, str(Path(__file__).resolve().parents[1]))
+
+from a2 import exercise_1, exercise_2
+from basic_math_recursion.task3 import exercise_4
+
+
+def test_status_code_breakdown_exercise_1():
+    records = [{"status_code": "200"}, {"status_code": "404"}, {"status_code": "500"}]
+    assert exercise_1.status_code_breakdown(records) == {"2xx": 1, "4xx": 1, "5xx": 1}
+
+
+def test_status_code_breakdown_exercise_2():
+    records = [{"status": "200"}, {"status": "403"}, {"status": "200"}]
+    assert exercise_2.status_code_breakdown(records) == {"2xx": 2, "4xx": 1}
+
+
+def test_fibonaacci_function_available_and_works():
+    assert exercise_4.fibonaacci(5) == 5