diff --git a/chartLib/src/main/kotlin/info/appdev/charting/charts/BarLineChartBase.kt b/chartLib/src/main/kotlin/info/appdev/charting/charts/BarLineChartBase.kt
index b45fae6a6..df5412080 100644
--- a/chartLib/src/main/kotlin/info/appdev/charting/charts/BarLineChartBase.kt
+++ b/chartLib/src/main/kotlin/info/appdev/charting/charts/BarLineChartBase.kt
@@ -527,15 +527,15 @@ abstract class BarLineChartBase<T : BarLineScatterCandleBubbleData<IBarLineScatt
     /**
      * draws the grid background
      */
-    protected fun drawGridBackground(c: Canvas) {
+    protected fun drawGridBackground(canvas: Canvas) {
         if (mDrawGridBackground) {
             // draw the grid background
 
-            c.drawRect(viewPortHandler.contentRect, mGridBackgroundPaint!!)
+            canvas.drawRect(viewPortHandler.contentRect, mGridBackgroundPaint!!)
         }
 
         if (this.isDrawBordersEnabled) {
-            c.drawRect(viewPortHandler.contentRect, mBorderPaint!!)
+            canvas.drawRect(viewPortHandler.contentRect, mBorderPaint!!)
         }
     }
 
diff --git a/chartLib/src/main/kotlin/info/appdev/charting/renderer/LineChartRenderer.kt b/chartLib/src/main/kotlin/info/appdev/charting/renderer/LineChartRenderer.kt
index ce9b76fd8..2a76d26f2 100644
--- a/chartLib/src/main/kotlin/info/appdev/charting/renderer/LineChartRenderer.kt
+++ b/chartLib/src/main/kotlin/info/appdev/charting/renderer/LineChartRenderer.kt
@@ -251,7 +251,7 @@ open class LineChartRenderer(
     /**
      * Draws a normal line.
      */
-    protected fun drawLinear(c: Canvas, dataSet: ILineDataSet) {
+    protected fun drawLinear(canvas: Canvas, dataSet: ILineDataSet) {
         val entryCount = dataSet.entryCount
 
         val pointsPerEntryPair = if (dataSet.isDrawSteppedEnabled) 4 else 2
@@ -266,14 +266,14 @@ open class LineChartRenderer(
         val canvas: Canvas? = if (dataSet.isDashedLineEnabled) {
             bitmapCanvas
         } else {
-            c
+            canvas
         }
 
         xBounds.set(dataProvider, dataSet)
 
         // if drawing filled is enabled
         if (dataSet.isDrawFilledEnabled && entryCount > 0) {
-            drawLinearFill(c, dataSet, trans!!, xBounds)
+            drawLinearFill(canvas!!, dataSet, trans!!, xBounds)
         }
 
         // more than 1 color