diff --git a/app/src/test/java/com/deniscerri/ytdlnis/ExampleUnitTest.java b/app/src/test/java/com/deniscerri/ytdlnis/ExampleUnitTest.java
deleted file mode 100644
index 73a186e8..00000000
--- a/app/src/test/java/com/deniscerri/ytdlnis/ExampleUnitTest.java
+++ /dev/null
@@ -1,17 +0,0 @@
-package com.deniscerri.ytdlnis;
-
-import static org.junit.Assert.assertEquals;
-
-import org.junit.Test;
-
-/**
- * Example local unit test, which will execute on the development machine (host).
- *
- * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
- */
-public class ExampleUnitTest {
-    @Test
-    public void addition_isCorrect() {
-        assertEquals(4, 2 + 2);
-    }
-}
\ No newline at end of file
diff --git a/app/src/test/java/com/deniscerri/ytdlnis/ExampleUnitTest.kt b/app/src/test/java/com/deniscerri/ytdlnis/ExampleUnitTest.kt
new file mode 100644
index 00000000..36ef53a3
--- /dev/null
+++ b/app/src/test/java/com/deniscerri/ytdlnis/ExampleUnitTest.kt
@@ -0,0 +1,16 @@
+package com.deniscerri.ytdlnis
+
+import org.junit.Assert
+import org.junit.Test
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see [Testing documentation](http://d.android.com/tools/testing)
+ */
+class ExampleUnitTest {
+    @Test
+    fun addition_isCorrect() {
+        Assert.assertEquals(4, (2 + 2).toLong())
+    }
+}
\ No newline at end of file