diff --git a/backend/models/pipelines.py b/backend/models/pipelines.py
index 6948b35..72a1807 100644
--- a/backend/models/pipelines.py
+++ b/backend/models/pipelines.py
@@ -33,7 +33,7 @@ def bitcoin_business_growth_timeseries(query):
     pipeline = [
         {
             "$match": {
-                "days_ago": {"$lte": int( query["days_ago"] )},
+                "days_ago": {"$lte": int(query["days_ago"])},
                 "country_name": query["country_name"],
             }
         },
@@ -51,7 +51,7 @@ def bitcoin_business_growth_timeseries(query):
 
 def bitcoin_business_growth_percent_diff_days_ago(query):
     pipeline = [
-        {"$match": {"days_ago": {"$lte": int( query["days_ago"] )}}},
+        {"$match": {"days_ago": {"$lte": int(query["days_ago"])}}},
         {"$sort": {"country_name": 1, "days_ago": 1}},
         {
             "$group": {