diff --git a/pkg/mining/manager.go b/pkg/mining/manager.go
index 2cb43d4..c3a971c 100644
--- a/pkg/mining/manager.go
+++ b/pkg/mining/manager.go
@@ -660,16 +660,16 @@ func (m *Manager) collectSingleMinerStats(miner Miner, minerType string, now tim
 
 	// Persist to database if enabled
 	if databaseEnabled {
-		dbPoint := database.HashratePoint{
+		databasePoint := database.HashratePoint{
 			Timestamp: point.Timestamp,
 			Hashrate:  point.Hashrate,
 		}
 		// Create a new context for DB writes (original context is from retry loop)
-		dbCtx, dbCancel := context.WithTimeout(context.Background(), statsCollectionTimeout)
-		if err := database.InsertHashratePoint(dbCtx, minerName, minerType, dbPoint, database.ResolutionHigh); err != nil {
+		databaseContext, databaseCancel := context.WithTimeout(context.Background(), statsCollectionTimeout)
+		if err := database.InsertHashratePoint(databaseContext, minerName, minerType, databasePoint, database.ResolutionHigh); err != nil {
 			logging.Warn("failed to persist hashrate", logging.Fields{"miner": minerName, "error": err})
 		}
-		dbCancel()
+		databaseCancel()
 	}
 
 	// Emit stats event for real-time WebSocket updates