diff --git a/ColorMyViews/app/src/main/java/com/android/example/colormyviews/MainActivity.kt b/ColorMyViews/app/src/main/java/com/android/example/colormyviews/MainActivity.kt
index c0cfc2223..c5a6f6144 100644
--- a/ColorMyViews/app/src/main/java/com/android/example/colormyviews/MainActivity.kt
+++ b/ColorMyViews/app/src/main/java/com/android/example/colormyviews/MainActivity.kt
@@ -84,9 +84,9 @@ class MainActivity : AppCompatActivity() {
             R.id.box_five_text -> view.setBackgroundColor(Color.BLUE)
 
             // Boxes using custom colors for background
-            R.id.red_button -> box_three_text.setBackgroundResource(R.color.my_red)
-            R.id.yellow_button -> box_four_text.setBackgroundResource(R.color.my_yellow)
-            R.id.green_button -> box_five_text.setBackgroundResource(R.color.my_green)
+            R.id.red_button -> findViewById<TextView>(R.id.box_three_text).setBackgroundResource(R.color.my_red)
+            R.id.yellow_button -> findViewById<TextView>(R.id.box_four_text).setBackgroundResource(R.color.my_yellow)
+            R.id.green_button -> findViewById<TextView>(R.id.box_five_text).setBackgroundResource(R.color.my_green)
 
             else -> view.setBackgroundColor(Color.LTGRAY)
         }