diff --git a/src/test/java/spoon/test/pkg/PackageTest.java b/src/test/java/spoon/test/pkg/PackageTest.java
index b6ad85b3d71..f04664e39cb 100644
--- a/src/test/java/spoon/test/pkg/PackageTest.java
+++ b/src/test/java/spoon/test/pkg/PackageTest.java
@@ -16,9 +16,18 @@
  */
 package spoon.test.pkg;
 
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.nio.file.Files;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
 import java.util.Set;
-import org.junit.Test;
+
 import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
 import spoon.Launcher;
 import spoon.OutputType;
 import spoon.SpoonModelBuilder;
@@ -46,22 +55,15 @@
 import spoon.test.pkg.testclasses.Foo;
 import spoon.testing.utils.ModelUtils;
 
-import java.io.BufferedReader;
-import java.io.File;
-import java.io.FileReader;
-import java.nio.file.Files;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
 
 import static org.hamcrest.CoreMatchers.equalTo;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.assertSame;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertSame;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.fail;
 import static spoon.testing.Assert.assertThat;
 import static spoon.testing.utils.ModelUtils.canBeBuilt;
 import static spoon.testing.utils.ModelUtils.createFactory;
@@ -326,7 +328,7 @@ public void testNoPackageAssumptionWithStarImportNoClasspath() {
 		CtModel model = launcher.buildModel();
 
 		List<CtTypeAccess<?>> typeAccesses = model.getElements(e -> e.getAccessedType().getSimpleName().equals("SomeClass"));
-		assertEquals("There should only be a single type access in the test source code", 1, typeAccesses.size());
+		assertEquals(1, typeAccesses.size(), "There should only be a single type access in the test source code");
 		CtPackageReference pkgRef = typeAccesses.get(0).getAccessedType().getPackage();
 
 		assertTrue(pkgRef.getSimpleName().isEmpty());