1 files changed, 6 insertions, 2 deletions
diff --git a/org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/commit/command/RevertHandler.java b/org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/commit/command/RevertHandler.java
index ec0e792019..c1de1a9dd9 100644
--- a/org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/commit/command/RevertHandler.java
+++ b/org.eclipse.egit.ui/src/org/eclipse/egit/ui/internal/commit/command/RevertHandler.java
@@ -30,6 +30,7 @@ import org.eclipse.egit.ui.internal.commit.RepositoryCommit;
 import org.eclipse.egit.ui.internal.dialogs.RevertFailureDialog;
 import org.eclipse.jface.dialogs.MessageDialog;
 import org.eclipse.jgit.api.MergeResult;
+import org.eclipse.jgit.lib.ObjectId;
 import org.eclipse.jgit.lib.Ref;
 import org.eclipse.jgit.lib.Repository;
 import org.eclipse.jgit.revwalk.RevCommit;
@@ -101,9 +102,12 @@ public class RevertHandler extends CommitCommandHandler {
 	}
 
 	private boolean contains(List<Ref> refs, RevCommit commit) {
-		for (Ref ref : refs)
-			if (ref.getObjectId().equals(commit.getId()))
+		for (Ref ref : refs) {
+			ObjectId objectId = ref.getObjectId();
+			if (objectId != null && objectId.equals(commit.getId())) {
 				return true;
+			}
+		}
 		return false;
 	}