diff --git a/Sources/SwiftUICharts/BarChart/BarChartRow.swift b/Sources/SwiftUICharts/BarChart/BarChartRow.swift
index f43e14d..fb5308d 100644
--- a/Sources/SwiftUICharts/BarChart/BarChartRow.swift
+++ b/Sources/SwiftUICharts/BarChart/BarChartRow.swift
@@ -19,7 +19,7 @@ public struct BarChartRow : View {
     public var body: some View {
         GeometryReader { geometry in
             HStack(alignment: .bottom, spacing: (geometry.frame(in: .local).width-22)/CGFloat(self.data.count * 3)){
-                ForEach(0..<self.data.count) { i in
+                ForEach(0..<self.data.count, id: \.self) { i in
                     BarChartCell(value: self.normalizedValue(index: i), index: i, width: Float(geometry.frame(in: .local).width - 22), numberOfDataPoints: self.data.count, accentColor: self.accentColor, gradient: self.gradient, touchLocation: self.$touchLocation)
                         .scaleEffect(self.touchLocation > CGFloat(i)/CGFloat(self.data.count) && self.touchLocation < CGFloat(i+1)/CGFloat(self.data.count) ? CGSize(width: 1.4, height: 1.1) : CGSize(width: 1, height: 1), anchor: .bottom)
                         .animation(.spring())