diff --git a/app/src/main/kotlin/info/appdev/chartexample/MultiLineChartActivity.kt b/app/src/main/kotlin/info/appdev/chartexample/MultiLineChartActivity.kt
index bc4aadcd4..9179971c7 100644
--- a/app/src/main/kotlin/info/appdev/chartexample/MultiLineChartActivity.kt
+++ b/app/src/main/kotlin/info/appdev/chartexample/MultiLineChartActivity.kt
@@ -90,8 +90,8 @@ class MultiLineChartActivity : DemoBase(), OnSeekBarChangeListener, OnChartGestu
             val sampleValues = getValues(100)
 
             for (i in 0..<progress) {
-                val valuesY = ((sampleValues[i]!!.toFloat() * binding.seekBarY.progress) + 3).toDouble()
-                values.add(Entry(i.toFloat(), valuesY.toFloat()))
+                val valuesY = (sampleValues[i]!!.toFloat() * binding.seekBarY.progress) + 3
+                values.add(Entry(i.toFloat(), valuesY))
             }
 
             val lineDataSet = LineDataSet(values, "DataSet " + (datasetNumber + 1))
diff --git a/chartLib/src/main/kotlin/info/appdev/charting/animation/Easing.kt b/chartLib/src/main/kotlin/info/appdev/charting/animation/Easing.kt
index 39061aa7d..870590776 100644
--- a/chartLib/src/main/kotlin/info/appdev/charting/animation/Easing.kt
+++ b/chartLib/src/main/kotlin/info/appdev/charting/animation/Easing.kt
@@ -1,7 +1,6 @@
 package info.appdev.charting.animation
 
 import android.animation.TimeInterpolator
-import androidx.annotation.RequiresApi
 import kotlin.math.asin
 import kotlin.math.cos
 import kotlin.math.pow
@@ -11,7 +10,6 @@ import kotlin.math.sqrt
 /**
  * Easing options.
  */
-@RequiresApi(11)
 object Easing {
     private const val DOUBLE_PI = 2f * Math.PI.toFloat()
 
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 aa5a244a3..905ae500d 100644
--- a/chartLib/src/main/kotlin/info/appdev/charting/charts/BarLineChartBase.kt
+++ b/chartLib/src/main/kotlin/info/appdev/charting/charts/BarLineChartBase.kt
@@ -352,7 +352,7 @@ abstract class BarLineChartBase<T : BarLineScatterCandleBubbleData<IBarLineScatt
 
     protected open fun prepareValuePxMatrix() {
         if (isLogEnabled) {
-            Timber.i("Preparing Value-Px Matrix, xMin: " + mXAxis.mAxisMinimum + ", xMax: " + mXAxis.mAxisMaximum + ", xDelta: " + mXAxis.mAxisRange)
+            Timber.i("Preparing Value-Px Matrix, xMin: ${mXAxis.mAxisMinimum}, xMax: ${mXAxis.mAxisMaximum}, xDelta: ${mXAxis.mAxisRange}")
         }
 
         mRightAxisTransformer.prepareMatrixValuePx(mXAxis.mAxisMinimum, mXAxis.mAxisRange, mAxisRight.mAxisRange, this.mAxisRight.mAxisMinimum)
@@ -522,7 +522,7 @@ abstract class BarLineChartBase<T : BarLineScatterCandleBubbleData<IBarLineScatt
 
             if (isLogEnabled) {
                 Timber.i("offsetLeft: $offsetLeft, offsetTop: $offsetTop, offsetRight: $offsetRight, offsetBottom: $offsetBottom")
-                Timber.i("Content: " + viewPortHandler.contentRect)
+                Timber.i("Content: ${viewPortHandler.contentRect}")
             }
         }
 
diff --git a/chartLib/src/main/kotlin/info/appdev/charting/charts/PieChart.kt b/chartLib/src/main/kotlin/info/appdev/charting/charts/PieChart.kt
index 1202d9e06..170acb87a 100644
--- a/chartLib/src/main/kotlin/info/appdev/charting/charts/PieChart.kt
+++ b/chartLib/src/main/kotlin/info/appdev/charting/charts/PieChart.kt
@@ -268,7 +268,7 @@ open class PieChart : PieRadarChartBase<PieData> {
             var diff = 0f
 
             for (i in 0..<data.dataSetCount) {
-                val set = dataSets!!.get(i)
+                val set = dataSets!![i]
 
                 for (j in 0..<set.entryCount) {
                     val drawAngle = calcAngle(abs(set.getEntryForIndex(j)!!.y), yValueSum)
@@ -554,12 +554,14 @@ open class PieChart : PieRadarChartBase<PieData> {
          * @param maxAngle min 90, max 360
          */
         set(value) {
-            var maxangle = value
-            if (maxangle > 360) maxangle = 360f
+            var maxAngle = value
+            if (maxAngle > 360)
+                maxAngle = 360f
 
-            if (maxangle < 90) maxangle = 90f
+            if (maxAngle < 90)
+                maxAngle = 90f
 
-            this.mMaxAngle = maxangle
+            this.mMaxAngle = maxAngle
         }
 
     var minAngleForSlices: Float
@@ -574,7 +576,7 @@ open class PieChart : PieRadarChartBase<PieData> {
          * and [.invalidate] when changing this, only works if there is enough room for all
          * slices to have the minimum angle.
          *
-         * @param minAngle minimum 0, maximum is half of [.setMaxAngle]
+         * minimum 0, maximum is half of [.setMaxAngle]
          */
         set(minAngle) {
             var minAngle = minAngle
diff --git a/chartLib/src/main/kotlin/info/appdev/charting/renderer/BubbleChartRenderer.kt b/chartLib/src/main/kotlin/info/appdev/charting/renderer/BubbleChartRenderer.kt
index ef44901b1..2d2c7b463 100644
--- a/chartLib/src/main/kotlin/info/appdev/charting/renderer/BubbleChartRenderer.kt
+++ b/chartLib/src/main/kotlin/info/appdev/charting/renderer/BubbleChartRenderer.kt
@@ -40,7 +40,13 @@ open class BubbleChartRenderer(
     private val pointBuffer = FloatArray(2)
 
     protected fun getShapeSize(entrySize: Float, maxSize: Float, reference: Float, normalizeSize: Boolean): Float {
-        val factor = if (normalizeSize) (if (maxSize == 0f) 1f else sqrt((entrySize / maxSize).toDouble()).toFloat()) else entrySize
+        val factor = if (normalizeSize)
+            (if (maxSize == 0f)
+                1f
+            else
+                sqrt((entrySize / maxSize).toDouble()).toFloat())
+        else
+            entrySize
         val shapeSize = reference * factor
         return shapeSize
     }
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..c8a6ee482 100644
--- a/chartLib/src/main/kotlin/info/appdev/charting/renderer/LineChartRenderer.kt
+++ b/chartLib/src/main/kotlin/info/appdev/charting/renderer/LineChartRenderer.kt
@@ -341,10 +341,10 @@ open class LineChartRenderer(
                 canvas!!.drawLines(lineBuffer, 0, pointsPerEntryPair * 2, paintRender)
             }
         } else { // only one color per dataset
-
-            if (lineBuffer.size < max(((entryCount) * pointsPerEntryPair).toDouble(), pointsPerEntryPair.toDouble()) * 2) lineBuffer = FloatArray(
-                (max(((entryCount) * pointsPerEntryPair).toDouble(), pointsPerEntryPair.toDouble()) * 4).toInt()
-            )
+            if (lineBuffer.size < max(((entryCount) * pointsPerEntryPair).toDouble(), pointsPerEntryPair.toDouble()) * 2)
+                lineBuffer = FloatArray(
+                    (max(((entryCount) * pointsPerEntryPair).toDouble(), pointsPerEntryPair.toDouble()) * 4).toInt()
+                )
 
             var e1: Entry?
             var e2: Entry?