diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/commitgraph/CommitGraphWriter.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/commitgraph/CommitGraphWriter.java
index 2f96c4d77..a58a9eb63 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/commitgraph/CommitGraphWriter.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/commitgraph/CommitGraphWriter.java
@@ -103,7 +103,8 @@ public void write(@NonNull ProgressMonitor monitor,
 			writeChunks(monitor, out, chunks);
 			writeCheckSum(out);
 		} catch (InterruptedIOException e) {
-			throw new IOException(JGitText.get().commitGraphWritingCancelled);
+			throw new IOException(JGitText.get().commitGraphWritingCancelled,
+					e);
 		} finally {
 			monitor.endTask();
 		}