diff --git a/backend/app/services/collectors/price_collector.py b/backend/app/services/collectors/price_collector.py
index 517cb53..9549a44 100644
--- a/backend/app/services/collectors/price_collector.py
+++ b/backend/app/services/collectors/price_collector.py
@@ -78,10 +78,10 @@ class PriceCollector(BaseCollector):
 
                 df = df.reset_index()
                 df.columns = ["date", "open", "high", "low", "close", "volume",
-                             "value", "change"]
+                             "value"]
 
                 # Validate column count
-                expected_cols = 8  # date + 7 data columns
+                expected_cols = 7  # date + 6 data columns
                 if len(df.columns) < expected_cols:
                     logger.warning(f"Unexpected column count for {ticker}: {len(df.columns)}")
                     continue