diff --git a/cli/cmd/generate.go b/cli/cmd/generate.go
index dbbd05dcbf..f702e3d5ef 100644
--- a/cli/cmd/generate.go
+++ b/cli/cmd/generate.go
@@ -429,7 +429,9 @@ func addSeedshareOwnerKeyToManifest(manifst *manifest.Manifest, keyPath string)
 	default:
 		return fmt.Errorf("unsupported PEM block type: %s", block.Type)
 	}
-	manifst.SeedshareOwnerPubKeys = append(manifst.SeedshareOwnerPubKeys, publicKey)
+	if !slices.Contains(manifst.SeedshareOwnerPubKeys, publicKey) {
+		manifst.SeedshareOwnerPubKeys = append(manifst.SeedshareOwnerPubKeys, publicKey)
+	}
 
 	return nil
 }