diff --git a/org.eclipse.jgit.junit.http/src/org/eclipse/jgit/junit/http/HttpTestCase.java b/org.eclipse.jgit.junit.http/src/org/eclipse/jgit/junit/http/HttpTestCase.java
index 84bb88861..ab5d3e1d9 100644
--- a/org.eclipse.jgit.junit.http/src/org/eclipse/jgit/junit/http/HttpTestCase.java
+++ b/org.eclipse.jgit.junit.http/src/org/eclipse/jgit/junit/http/HttpTestCase.java
@@ -117,7 +117,9 @@ public abstract class HttpTestCase extends LocalDiskRepositoryTestCase {
 
 	protected static void fsck(Repository db, RevObject... tips)
 			throws Exception {
-		new TestRepository(db).fsck(tips);
+		TestRepository<? extends Repository> tr =
+				new TestRepository<Repository>(db);
+		tr.fsck(tips);
 	}
 
 	protected static Set<RefSpec> mirror(String... refs) {