diff --git a/server/download.go b/server/download.go
index 1674bffd6..857b16926 100644
--- a/server/download.go
+++ b/server/download.go
@@ -170,9 +170,12 @@ func (b *blobDownload) Prepare(ctx context.Context, requestURL *url.URL, opts *r
 
 			offset += size
 		}
-	} else {
+	}
+
+	if len(b.Parts) > 0 {
 		slog.Info(fmt.Sprintf("downloading %s in %d %s part(s)", b.Digest[7:19], len(b.Parts), format.HumanBytes(b.Parts[0].Size)))
 	}
+
 	return nil
 }
 
diff --git a/server/upload.go b/server/upload.go
index 020e89551..312545eec 100644
--- a/server/upload.go
+++ b/server/upload.go
@@ -108,7 +108,9 @@ func (b *blobUpload) Prepare(ctx context.Context, requestURL *url.URL, opts *reg
 		offset += size
 	}
 
-	slog.Info(fmt.Sprintf("uploading %s in %d %s part(s)", b.Digest[7:19], len(b.Parts), format.HumanBytes(b.Parts[0].Size)))
+	if len(b.Parts) > 0 {
+		slog.Info(fmt.Sprintf("uploading %s in %d %s part(s)", b.Digest[7:19], len(b.Parts), format.HumanBytes(b.Parts[0].Size)))
+	}
 
 	requestURL, err = url.Parse(location)
 	if err != nil {