diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsReftableDatabase.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsReftableDatabase.java
index 9c844ebe0..40cfb71dd 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsReftableDatabase.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsReftableDatabase.java
@@ -241,7 +241,7 @@ public Map<String, Ref> getRefs(String prefix) throws IOException {
 					: table.seekRef(prefix)) {
 				while (rc.next()) {
 					Ref ref = table.resolve(rc.getRef());
-					if (ref != null) {
+					if (ref != null && ref.getObjectId() != null) {
 						all.add(ref);
 					}
 				}