diff --git a/src/test/java/org/terasology/world/generator/TreeTests.java b/src/test/java/org/terasology/world/generator/TreeTests.java
index 6fa82d3..ebbdec7 100644
--- a/src/test/java/org/terasology/world/generator/TreeTests.java
+++ b/src/test/java/org/terasology/world/generator/TreeTests.java
@@ -5,9 +5,8 @@
 
 import org.joml.Vector2ic;
 import org.joml.Vector3i;
-import org.junit.Assert;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 import org.mockito.ArgumentMatchers;
 import org.mockito.Mockito;
 import org.terasology.context.internal.ContextImpl;
@@ -27,12 +26,14 @@
 
 import java.util.stream.IntStream;
 
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
 public class TreeTests {
 
     private BlockManager blockManager;
     private ExtraBlockDataManager extraDataManager;
 
-    @Before
+    @BeforeEach
     public void setup() {
         ContextImpl context = new ContextImpl();
         CoreRegistry.setContext(context);
@@ -108,8 +109,9 @@ public Block setBlock(int x, int y, int z, Block block) {
     }
 
     private void assertIsLessOrEqual(final Vector3i actual, final Vector3i maximum) {
-        Assert.assertTrue("Maximum extent " + actual + " should be less or equal to " + maximum,
-                actual.x <= maximum.x && actual.y <= maximum.y && actual.z <= maximum.z);
+        assertTrue(
+                actual.x <= maximum.x && actual.y <= maximum.y && actual.z <= maximum.z,
+                "Maximum extent " + actual + " should be less or equal to " + maximum);
     }
 
 }