diff --git a/org.eclipse.jgit.lfs.test/tst/org/eclipse/jgit/lfs/lib/AbbreviatedLongObjectIdTest.java b/org.eclipse.jgit.lfs.test/tst/org/eclipse/jgit/lfs/lib/AbbreviatedLongObjectIdTest.java
index 8938a7875..2a8f66e4c 100644
--- a/org.eclipse.jgit.lfs.test/tst/org/eclipse/jgit/lfs/lib/AbbreviatedLongObjectIdTest.java
+++ b/org.eclipse.jgit.lfs.test/tst/org/eclipse/jgit/lfs/lib/AbbreviatedLongObjectIdTest.java
@@ -587,6 +587,7 @@ public void testGetFirstByte() {
 		assertEquals(id.getFirstByte(), a.getFirstByte());
 	}
 
+	@SuppressWarnings("unlikely-arg-type")
 	@Test
 	public void testNotEquals() {
 		AbbreviatedLongObjectId a = new LongObjectId(1L, 2L, 3L, 4L)
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/diff/EditListTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/diff/EditListTest.java
index d6a5dcde2..70447c7d5 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/diff/EditListTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/diff/EditListTest.java
@@ -53,6 +53,7 @@
 import org.junit.Test;
 
 public class EditListTest {
+	@SuppressWarnings("unlikely-arg-type")
 	@Test
 	public void testEmpty() {
 		final EditList l = new EditList();
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/diff/EditTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/diff/EditTest.java
index 1a0c39ebf..c621a7fab 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/diff/EditTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/diff/EditTest.java
@@ -125,6 +125,7 @@ public void testToString() {
 		assertEquals("REPLACE(1-2,1-4)", e.toString());
 	}
 
+	@SuppressWarnings("unlikely-arg-type")
 	@Test
 	public void testEquals1() {
 		final Edit e1 = new Edit(1, 2, 3, 4);
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/revwalk/RevObjectTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/revwalk/RevObjectTest.java
index 95e7ca6d5..122a3973d 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/revwalk/RevObjectTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/revwalk/RevObjectTest.java
@@ -60,6 +60,7 @@ public void testId() throws Exception {
 		assertSame(a, a.getId());
 	}
 
+	@SuppressWarnings("unlikely-arg-type")
 	@Test
 	public void testEquals() throws Exception {
 		final RevCommit a1 = commit();