diff --git a/Makefile b/Makefile
index d646f65..90bb694 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,7 @@ lint:
 	@echo "Auto-linting files and performing final style checks..."
 	@isort --profile=black .
 	@black .
-	@flake8 --max-line-length=88 .
+	@flake8 --max-line-length=88 --ignore E203 .
 
 check: lint
 	@echo "Checking for unstaged or untracked changes..."
diff --git a/generate_data.py b/generate_data.py
index 0f12e05..cfe8e9a 100644
--- a/generate_data.py
+++ b/generate_data.py
@@ -105,6 +105,7 @@ def calculate_distance(pair):
     distance = get_distance(city1["name"], city2["name"])
     return city1["name"], city2["name"], distance
 
+
 def main():
     cities = list(us_cities.values())
     print(f"Num cities: {len(cities)}")
@@ -121,7 +122,7 @@ def main():
         try:
             executor = concurrent.futures.ProcessPoolExecutor(max_workers=args.workers)
             for i in range(num_chunks):
-                chunk = city_combinations[i * chunk_size : (i + 1) * chunk_size]
+                chunk = city_combinations[(i * chunk_size) : (i + 1) * chunk_size]
                 futures = {
                     executor.submit(calculate_distance, pair): pair for pair in chunk
                 }