diff --git a/config/config.go b/config/config.go
index a597e64..373c5e6 100644
--- a/config/config.go
+++ b/config/config.go
@@ -46,26 +46,25 @@ type Asset struct {
 	RelativeBases []moon.RelativeBase `koanf:"relativeBases"`
 }
 
-func (r Root) ForAsset(asset coindesk.Asset) (data Asset) {
-	data, ok := r.Assets[asset]
-	if !ok {
-		data = r.Defaults
-	}
-	if data.Asset == "" {
-		data.Asset = asset
-	}
-	if data.Goals == nil || len(data.Goals) == 0 {
-		data.Goals = r.Defaults.Goals
-	}
-	if data.ConstantBases == nil || len(data.ConstantBases) == 0 {
-		data.ConstantBases = r.Defaults.ConstantBases
-	}
-	if data.RelativeBases == nil || len(data.RelativeBases) == 0 {
-		data.RelativeBases = r.Defaults.RelativeBases
-	}
+func (r Root) ForAsset(a coindesk.Asset) (cfg Asset) {
+	cfg = merge(r.Assets[a], r.Defaults)
+	cfg.Asset = a
 	return
 }
 
+func merge(dst, src Asset) Asset {
+	if len(dst.Goals) == 0 {
+		dst.Goals = src.Goals
+	}
+	if len(dst.ConstantBases) == 0 {
+		dst.ConstantBases = src.ConstantBases
+	}
+	if len(dst.RelativeBases) == 0 {
+		dst.RelativeBases = src.RelativeBases
+	}
+	return dst
+}
+
 // GetBases returns the concatenation of the constant and relative bases, sorted
 // from most recent to least recent in time.
 func GetBases(d *Asset) (bases []moon.Base) {
diff --git a/tui/asset/asset.go b/tui/asset/asset.go
index 68b320e..0243312 100644
--- a/tui/asset/asset.go
+++ b/tui/asset/asset.go
@@ -148,9 +148,9 @@ type update struct {
 type stopIndicator struct{}
 
 func (m Model) refresh() tea.Msg {
-	ctx, cancel := context.WithDeadline(
+	ctx, cancel := context.WithTimeout(
 		context.Background(),
-		time.Now().Add(refreshDeadline))
+		refreshTimeout)
 	defer cancel()
 	err := m.math.Refresh(ctx)
 	if err != nil {
@@ -183,7 +183,7 @@ func (m Model) stopIndicator() tea.Cmd {
 }
 
 var refreshInterval = time.Second * 30
-var refreshDeadline = time.Second * 15
+var refreshTimeout = time.Second * 15
 var stopIndicatorDelay = time.Millisecond * 500
 
 func refillProperties(m *Model) {