diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/storage/file/AbbreviationTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/storage/file/AbbreviationTest.java
index 1a38a7deb..25e7aa3a1 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/storage/file/AbbreviationTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/storage/file/AbbreviationTest.java
@@ -144,7 +144,6 @@ public class AbbreviationTest extends LocalDiskRepositoryTestCase {
 		assertEquals(id, db.resolve(reader.abbreviate(id, 8).name()));
 	}
 
-	@SuppressWarnings("unchecked")
 	public void testAbbreviateIsActuallyUnique() throws Exception {
 		// This test is far more difficult. We have to manually craft
 		// an input that contains collisions at a particular prefix,
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/WindowCache.java b/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/WindowCache.java
index 523e08484..68fa19120 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/WindowCache.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/WindowCache.java
@@ -518,7 +518,6 @@ public class WindowCache {
 		gc();
 	}
 
-	@SuppressWarnings("unchecked")
 	private void gc() {
 		Ref r;
 		while ((r = (Ref) queue.poll()) != null) {