diff --git a/Source/Charts/Renderers/LegendRenderer.swift b/Source/Charts/Renderers/LegendRenderer.swift
index 0731a1574e..e5096b1d7a 100755
--- a/Source/Charts/Renderers/LegendRenderer.swift
+++ b/Source/Charts/Renderers/LegendRenderer.swift
@@ -44,7 +44,7 @@ open class LegendRenderer: Renderer
             // loop for building up the colors and labels used in the legend
             for i in 0..<data.dataSetCount
             {
-                let dataSet = data.getDataSetByIndex(i)!
+                guard let dataSet = data.getDataSetByIndex(i) else { continue }
                 
                 var clrs: [NSUIColor] = dataSet.colors
                 let entryCount = dataSet.entryCount